Manhattan C.
Rankings
| Data year | Earned doctorates | Full-time graduate students | Total R&D expenditures | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rank | Percentile | Institutions ranked | Rank | Percentile | Institutions ranked | Rank | Percentile | Institutions ranked | Rank | Percentile | Institutions ranked | |
| 2024 | ||||||||||||
| 2023 | 438 | 36.2 | 679 | 476 | 21.8 | 602 | 656 | 29 | 914 | |||
| 2022 | 315 | 54.2 | 680 | 593 | 34.8 | 900 | ||||||
| 2021 | 413 | 40.9 | 691 | 485 | 17.7 | 583 | 554 | 39.6 | 908 | |||
| 2020 | 362 | 48.7 | 698 | 606 | 34.5 | 916 | ||||||
| 2019 | 382 | 45.8 | 697 | 490 | 17.7 | 589 | 626 | 32.2 | 914 | |||
| 2018 | 423 | 40.2 | 700 | 595 | 35.4 | 911 | ||||||
| 2017 | 401 | 42 | 684 | 665 | 26.7 | 898 | ||||||
| 2016 | 494 | 29.9 | 697 | 657 | 27.4 | 896 | ||||||
| 2015 | 508 | 27.5 | 693 | 679 | 25.2 | 898 | ||||||
| 2014 | 490 | 29.5 | 688 | 799 | 11 | 889 | ||||||
  NOTES:
  
- 1. See TableBuilder for the prior year data.
 - 2. Blank white cells indicate data not available, not applicable, or institution not eligible for survey.
 - 3. Data from the Survey of Science and Engineering Research Facilities is collected every two years.
 
Data
| All races | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 88 | 208 | 104 | 121 | 117 | 90 | 95 | 56 | 53 | 58 | 0 | |||||||||||
| Female | 40 | 86 | 34 | 68 | 43 | 26 | 38 | 28 | 18 | 18 | 0 | |||||||||||
| U.S. citizens and permanent residents | 128 | 265 | 138 | 189 | 160 | 116 | 133 | 84 | 71 | 76 | 0 | |||||||||||
| Hispanic or Latino | 21 | 70 | 19 | 18 | 20 | 13 | 11 | 7 | 5 | 2 | 0 | |||||||||||
| Not Hispanic or Latino | 99 | 173 | 90 | 102 | 102 | 86 | 85 | 49 | 34 | 42 | 0 | |||||||||||
| American Indian or Alaska Native | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Asian | 10 | 26 | 16 | 11 | 17 | 16 | 9 | 3 | 5 | 6 | 0 | |||||||||||
| Black or African American | 9 | 17 | 8 | 8 | 11 | 6 | 5 | 3 | 0 | 0 | 0 | |||||||||||
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| White | 73 | 125 | 64 | 74 | 65 | 63 | 68 | 41 | 26 | 35 | 0 | |||||||||||
| More than one race | 7 | 5 | 2 | 9 | 8 | 1 | 3 | 2 | 3 | 1 | 0 | |||||||||||
| Unknown ethnicity and race | 8 | 22 | 29 | 69 | 38 | 17 | 37 | 28 | 32 | 32 | 0 | |||||||||||
| Temporary visa holders | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Science and engineering | 128 | 294 | 138 | 189 | 160 | 116 | 133 | 84 | 71 | 76 | 0 | |||||||||||
| Science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Agricultural and veterinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological and biomedical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Communication | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Family and consumer sciences and human sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Geosciences, atmospheric, and ocean sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mathematics and statistics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Multidisciplinary and interdisciplinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Physical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Social sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Engineering | 128 | 294 | 138 | 189 | 160 | 116 | 133 | 84 | 71 | 76 | 0 | |||||||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological, biomedical, and biosystems engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Chemical, petroleum, and chemical-related engineering | 13 | 31 | 13 | 20 | 12 | 10 | 17 | 20 | 19 | 11 | 0 | |||||||||||
| Civil, environmental, transportation and related engineering fields | 76 | 158 | 70 | 89 | 85 | 57 | 79 | 34 | 20 | 26 | 0 | |||||||||||
| Electrical, electronics, communications and computer engineering | 12 | 36 | 21 | 35 | 24 | 13 | 12 | 7 | 9 | 13 | 0 | |||||||||||
| Industrial, manufacturing, systems engineering and operations research | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mechanical engineering | 27 | 69 | 34 | 45 | 39 | 36 | 25 | 23 | 23 | 26 | 0 | |||||||||||
| Metallurgical, mining, materials and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Clinical medicine | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Fields of study are grouped as they appear in survey data table (https://www.nsf.gov/statistics/srvygradpostdoc/#tabs-2).
 
| All races | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 31 | 49 | 32 | 25 | 39 | 34 | 40 | 87 | 102 | 94 | 0 | |||||||||||
| Female | 10 | 19 | 11 | 7 | 8 | 15 | 11 | 31 | 38 | 32 | 0 | |||||||||||
| U.S. citizens and permanent residents | 41 | 68 | 43 | 32 | 47 | 49 | 51 | 118 | 140 | 126 | 0 | |||||||||||
| Hispanic or Latino | 2 | 13 | 3 | 3 | 4 | 3 | 4 | 6 | 11 | 2 | 0 | |||||||||||
| Not Hispanic or Latino | 36 | 45 | 29 | 22 | 29 | 36 | 26 | 61 | 64 | 68 | 0 | |||||||||||
| American Indian or Alaska Native | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Asian | 2 | 6 | 4 | 2 | 6 | 4 | 1 | 5 | 3 | 5 | 0 | |||||||||||
| Black or African American | 5 | 6 | 4 | 1 | 0 | 1 | 2 | 1 | 1 | 0 | 0 | |||||||||||
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| White | 26 | 33 | 19 | 17 | 21 | 27 | 23 | 55 | 60 | 62 | 0 | |||||||||||
| More than one race | 3 | 0 | 2 | 2 | 2 | 4 | 0 | 0 | 0 | 1 | 0 | |||||||||||
| Unknown ethnicity and race | 3 | 10 | 11 | 7 | 14 | 10 | 21 | 51 | 65 | 56 | 0 | |||||||||||
| Temporary visa holders | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Science and engineering | 41 | 68 | 43 | 32 | 47 | 49 | 51 | 118 | 140 | 126 | 0 | |||||||||||
| Science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Agricultural and veterinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological and biomedical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Communication | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Family and consumer sciences and human sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Geosciences, atmospheric, and ocean sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mathematics and statistics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Multidisciplinary and interdisciplinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Physical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Social sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Engineering | 41 | 68 | 43 | 32 | 47 | 49 | 51 | 118 | 140 | 126 | 0 | |||||||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological, biomedical, and biosystems engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Chemical, petroleum, and chemical-related engineering | 2 | 7 | 6 | 0 | 1 | 1 | 0 | 7 | 5 | 7 | 0 | |||||||||||
| Civil, environmental, transportation and related engineering fields | 29 | 45 | 22 | 23 | 40 | 35 | 37 | 89 | 104 | 98 | 0 | |||||||||||
| Electrical, electronics, communications and computer engineering | 4 | 10 | 7 | 5 | 4 | 6 | 7 | 7 | 18 | 15 | 0 | |||||||||||
| Industrial, manufacturing, systems engineering and operations research | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mechanical engineering | 6 | 6 | 8 | 4 | 2 | 7 | 7 | 15 | 13 | 6 | 0 | |||||||||||
| Metallurgical, mining, materials and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Clinical medicine | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Fields of study are grouped as they appear in survey data table (https://www.nsf.gov/statistics/srvygradpostdoc/#tabs-2).
 
| Field | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All surveyed fields | 3 | 5 | 2 | 2 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | |||||||||||
| Science and engineering | 3 | 5 | 2 | 2 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | |||||||||||
| Science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Agricultural and veterinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological and biomedical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Communication | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Family and consumer sciences and human sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Geosciences, atmospheric, and ocean sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mathematics and statistics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Multidisciplinary and interdisciplinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Physical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Social sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Engineering | 3 | 5 | 2 | 2 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | |||||||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological, biomedical, and biosystems engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Chemical, petroleum, and chemical-related engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Civil, environmental, transportation and related engineering fields | 3 | 5 | 2 | 2 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | |||||||||||
| Electrical, electronics, communications and computer engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Industrial, manufacturing, systems engineering and operations research | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mechanical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Metallurgical, mining, materials and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Clinical medicine | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Fields of study are grouped as they appear in survey data table (https://www.nsf.gov/statistics/srvygradpostdoc/#tabs-2).
 
| Type and primary source of support | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All types and sources of support | 128 | 294 | 138 | 189 | 160 | 116 | 133 | 84 | 71 | 76 | ||||||||||
| Fellowships | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Federal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Institutional | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Nonfederal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Research assistantships | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | ||||||||||
| Federal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Institutional | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Nonfederal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | ||||||||||
| Teaching assistantships | 0 | 0 | 0 | 0 | 0 | 0 | 37 | 40 | 22 | 29 | ||||||||||
| Federal | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | ||||||||||
| Institutional | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 40 | 22 | 29 | ||||||||||
| Nonfederal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Other types of support | 128 | 294 | 138 | 189 | 160 | 116 | 96 | 44 | 49 | 41 | ||||||||||
| Federal | 3 | 5 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Institutional | 62 | 130 | 60 | 76 | 45 | 0 | 0 | 0 | 5 | 0 | ||||||||||
| Nonfederal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | ||||||||||
| Personal resources | 63 | 159 | 76 | 111 | 115 | 116 | 96 | 44 | 38 | 41 | 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 
| All races | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Science and engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Agricultural and veterinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological and biomedical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Communication | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Family and consumer sciences and human sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Geosciences, atmospheric, and ocean sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mathematics and statistics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Multidisciplinary and interdisciplinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Physical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Social sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological, biomedical, and biosystems engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Chemical, petroleum, and chemical-related engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Civil, environmental, transportation and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Electrical, electronics, communications and computer engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Industrial, manufacturing, systems engineering and operations research | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mechanical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Metallurgical, mining, materials and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Clinical medicine | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Fields of study are grouped as they appear in survey data table (https://www.nsf.gov/statistics/srvygradpostdoc/#tabs-2).
 
| Field | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All surveyed fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Science and engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Agricultural and veterinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological and biomedical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Communication | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Family and consumer sciences and human sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Geosciences, atmospheric, and ocean sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mathematics and statistics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Multidisciplinary and interdisciplinary sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Physical sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Social sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Biological, biomedical, and biosystems engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Chemical, petroleum, and chemical-related engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Civil, environmental, transportation and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Electrical, electronics, communications and computer engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Industrial, manufacturing, systems engineering and operations research | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Mechanical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Metallurgical, mining, materials and related engineering fields | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Clinical medicine | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||||||
| Other health | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Fields of study are grouped as they appear in survey data table (https://www.nsf.gov/statistics/srvygradpostdoc/#tabs-2).
 
| Field | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All R&D fields | 1,250 | 1,641 | 1,864 | 1,307 | 1,190 | 1,381 | 897 | 866 | 732 | 373 | ||||||||||
| Science | 674 | 419 | 400 | 348 | 160 | 0 | 0 | 131 | 64 | 373 | ||||||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Geosciences, atmospheric sciences, and ocean sciences | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 372 | ||||||||||
| Atmospheric science and meteorology | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Geological and earth sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Ocean sciences and marine sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Geosciences, atmospheric sciences, and ocean sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Life sciences | 114 | 37 | 49 | 66 | 91 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Agricultural sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Biological and biomedical sciences | 114 | 37 | 49 | 56 | 82 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Health sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Life sciences nec | 0 | 0 | 0 | 10 | 9 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Mathematics and statistics | 260 | 242 | 239 | 147 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Physical sciences | 79 | 140 | 112 | 71 | 55 | 0 | 0 | 0 | 64 | 0 | ||||||||||
| Astronomy and astrophysics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Chemistry | 79 | 140 | 112 | 71 | 55 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Materials science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Physics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Physical sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Social sciences | 221 | 0 | 0 | 64 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Anthropology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Economics | 221 | 0 | 0 | 64 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Political science and government | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Sociology, demography, and population studies | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Social sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 131 | 0 | 1 | ||||||||||
| Engineering | 447 | 899 | 1,122 | 716 | 809 | 1,381 | 897 | 735 | 629 | 0 | ||||||||||
| Engineering | 0 | 0 | 0 | 0 | 0 | 1,381 | 897 | 735 | 629 | 0 | ||||||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Bioengineering and biomedical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Chemical engineering | 43 | 308 | 279 | 216 | 1 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Civil engineering | 371 | 577 | 731 | 493 | 785 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Electrical, electronic, and communications engineering | 0 | 11 | 112 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Industrial and manufacturing engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Mechanical engineering | 33 | 3 | 0 | 7 | 23 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Metallurgical and materials engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Engineering nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Non-S&E | 129 | 323 | 342 | 243 | 221 | 0 | 0 | 0 | 39 | 0 | ||||||||||
| Business management and business administration | 0 | 167 | 162 | 178 | 210 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Communication and communications technologies | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Education | 113 | 156 | 180 | 65 | 11 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Humanities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Law | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Social work | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Visual and performing arts | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||
| Non-S&E nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Prior to FY 2016, expenditures for natural resources and conservation, materials science, anthropology, and industrial and manufacturing engineering were not collected separately. R&D expenditures in agricultural sciences decreased in FY 2016 because a number of disciplines previously reported in that field are now reported separately under natural resources and conservation.
 
SOURCE: National Center for Science and Engineering Statistics, Higher Education R&D Survey
| Field | All R&D expenditures | Federal government | State and local government | Institution funds | Business | Nonprofit organizations | All other sources | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All R&D fields | 1,250 | 422 | 222 | 460 | 146 | 0 | 0 | |||||||
| Science | 674 | 339 | 0 | 309 | 26 | 0 | 0 | |||||||
| Computer and information sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Geosciences, atmospheric sciences, and ocean sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Atmospheric science and meteorology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Geological and earth sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Ocean sciences and marine sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Geosciences, atmospheric sciences, and ocean sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Life sciences | 114 | 0 | 0 | 88 | 26 | 0 | 0 | |||||||
| Agricultural sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Biological and biomedical sciences | 114 | 0 | 0 | 88 | 26 | 0 | 0 | |||||||
| Health sciences | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Natural resources and conservation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Life sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Mathematics and statistics | 260 | 260 | 0 | 0 | 0 | 0 | 0 | |||||||
| Physical sciences | 79 | 79 | 0 | 0 | 0 | 0 | 0 | |||||||
| Astronomy and astrophysics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Chemistry | 79 | 79 | 0 | 0 | 0 | 0 | 0 | |||||||
| Materials science | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Physics | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Physical sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Psychology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Social sciences | 221 | 0 | 0 | 221 | 0 | 0 | 0 | |||||||
| Anthropology | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Economics | 221 | 0 | 0 | 221 | 0 | 0 | 0 | |||||||
| Political science and government | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Sociology, demography, and population studies | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Social sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Sciences nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Engineering | 447 | 83 | 131 | 151 | 82 | 0 | 0 | |||||||
| Aerospace, aeronautical, and astronautical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Bioengineering and biomedical engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Chemical engineering | 43 | 23 | 0 | 0 | 20 | 0 | 0 | |||||||
| Civil engineering | 371 | 60 | 116 | 151 | 44 | 0 | 0 | |||||||
| Electrical, electronic, and communications engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Industrial and manufacturing engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Mechanical engineering | 33 | 0 | 15 | 0 | 18 | 0 | 0 | |||||||
| Metallurgical and materials engineering | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Engineering nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Non-S&E | 129 | 0 | 91 | 0 | 38 | 0 | 0 | |||||||
| Business management and business administration | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Communication and communications technologies | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Education | 113 | 0 | 91 | 0 | 22 | 0 | 0 | |||||||
| Humanities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Law | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Social work | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
| Visual and performing arts | 16 | 0 | 0 | 0 | 16 | 0 | 0 | |||||||
| Non-S&E nec | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 
     NOTE:
      
   - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Prior to FY 2016, expenditures for natural resources and conservation, materials science, anthropology, and industrial and manufacturing engineering were not collected separately. R&D expenditures in agricultural sciences decreased in FY 2016 because a number of disciplines previously reported in that field are now reported separately under natural resources and conservation.
 
SOURCE: National Center for Science and Engineering Statistics, Higher Education R&D Survey
| Source of funds | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Federal Agencies | 422 | 440 | 397 | 398 | 245 | . | . | . | . | . | ||||||||||
| DOD | 86 | 61 | 0 | 0 | 0 | . | . | . | . | . | ||||||||||
| DOE | 0 | 0 | 0 | 0 | 0 | . | . | . | . | . | ||||||||||
| HHS | 253 | 251 | 221 | 71 | 55 | . | . | . | . | . | ||||||||||
| NASA | 0 | 0 | 0 | 0 | 0 | . | . | . | . | . | ||||||||||
| NSF | 68 | 128 | 176 | 322 | 166 | . | . | . | . | . | ||||||||||
| USDA | 0 | 0 | 0 | 0 | 0 | . | . | . | . | . | ||||||||||
| Other | 15 | 0 | 0 | 5 | 24 | . | . | . | . | . | 
     NOTE:
      
   - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 
SOURCE: National Center for Science and Engineering Statistics, Higher Education R&D Survey
| Year | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2023 | . | . | . | . | ||||
| 2022 | . | . | . | . | ||||
| 2021 | . | . | . | . | ||||
| 2020 | . | . | . | . | ||||
| 2019 | 200 | 30 | 170 | . | ||||
| 2018 | . | . | . | . | ||||
| 2017 | . | . | . | . | 
     NOTE:
      
   - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 
SOURCE: National Center for Science and Engineering Statistics, Higher Education R&D Survey
| Field, medical school space, and research animal space | 2023 | 2021 | 2019 | 2017 | 2015 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| All research space | 38 | i | 31 | i | 30 | i | . | . | ||
| Agricultural sciences | 0 | i | 0 | i | 0 | i | . | . | ||
| Biological and biomedical sciences | 4 | i | 6 | i | 6 | i | . | . | ||
| Computer and information sciences | 3 | i | 3 | i | 3 | i | . | . | ||
| Engineering | 5 | i | 0 | i | 0 | i | . | . | ||
| Geosciences, atmospheric sciences, and ocean sciences | 3 | i | 0 | i | 0 | i | . | . | ||
| Health sciences | 0 | i | 0 | i | 0 | i | . | . | ||
| Mathematics and statistics | 4 | i | 4 | i | 3 | i | . | . | ||
| Natural resources and conservation | 1 | i | 0 | i | 1 | i | . | . | ||
| Physical sciences | 11 | i | 10 | i | 9 | i | . | . | ||
| Psychology | 4 | i | 5 | i | 4 | i | . | . | ||
| Social sciences | 4 | i | 5 | i | 4 | i | . | . | ||
| Other | 0 | i | 0 | i | 0 | i | . | . | 
i=imputed
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Data from the Survey of Science and Engineering Research Facilities is collected every two years.
 
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Data from the Survey of Science and Engineering Research Facilities is collected every two years.
 
| Field, medical school space, and research animal space | Planned to start in FY 2024 or FY 2025 | Started in FY 2022 or FY 2023 | Started in FY 2020 or FY 2021 | Started in FY 2018 or FY 2019 | Started in FY 2016 or FY 2017 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| All research space | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Agricultural sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Biological and biomedical sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Computer and information sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Engineering | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Geosciences, atmospheric sciences, and ocean sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Health sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Mathematics and statistics | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Natural resources and conservation | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Physical sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Psychology | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Social sciences | 0 | i | 0 | i | 0 | i | 0 | i | . | |
| Other | 0 | i | 0 | i | 0 | i | 0 | i | . | 
i=imputed
     NOTE:
      
   
  - . = data were not collected at this level or institution was not eligible to participate for this survey year.
 - Data from the Survey of Science and Engineering Research Facilities is collected every two years.
 
