All surveyed fields |
419,015 |
430,860 |
437,365 |
449,613 |
456,115 |
461,185 |
457,292 |
459,498 |
Science and engineering |
349,802 |
362,976 |
371,542 |
383,560 |
398,498 |
409,107 |
411,168 |
414,384 |
Science |
261,984 |
269,821 |
277,229 |
285,305 |
293,561 |
299,315 |
303,015 |
304,795 |
Agricultural sciences |
9,478 |
9,634 |
9,822 |
10,132 |
10,823 |
11,087 |
11,448 |
11,375 |
Biological sciences |
58,918 |
60,093 |
60,428 |
60,662 |
61,466 |
62,770 |
62,773 |
63,921 |
Anatomy |
899 |
906 |
823 |
731 |
806 |
800 |
726 |
650 |
Biochemistry |
5,433 |
5,581 |
5,498 |
5,085 |
4,886 |
4,909 |
4,771 |
4,781 |
Biology |
12,413 |
12,330 |
12,062 |
12,486 |
12,811 |
13,084 |
12,832 |
12,352 |
Biometry and epidemiology |
3,495 |
3,734 |
3,919 |
4,294 |
4,176 |
4,868 |
4,933 |
5,837 |
Biophysics |
1,145 |
1,183 |
1,159 |
1,037 |
1,001 |
1,033 |
972 |
932 |
Botany |
1,655 |
1,713 |
1,655 |
1,613 |
1,664 |
1,679 |
1,729 |
1,710 |
Cell biology |
6,188 |
6,317 |
6,445 |
6,632 |
6,660 |
6,621 |
6,517 |
6,440 |
Ecology |
1,602 |
1,744 |
1,617 |
1,620 |
1,417 |
1,471 |
1,372 |
1,324 |
Entomology and parasitology |
947 |
926 |
926 |
910 |
892 |
933 |
910 |
990 |
Genetics |
2,060 |
2,067 |
2,042 |
2,056 |
2,175 |
2,254 |
2,318 |
2,276 |
Microbiology, immunology, and virology |
5,015 |
4,992 |
4,898 |
4,745 |
4,660 |
4,569 |
4,643 |
4,612 |
Nutrition |
3,441 |
3,621 |
3,365 |
3,526 |
3,631 |
3,776 |
3,625 |
3,630 |
Pathology |
1,400 |
1,406 |
1,386 |
1,384 |
1,308 |
1,272 |
1,218 |
1,151 |
Pharmacology |
2,818 |
2,808 |
2,789 |
2,743 |
2,884 |
2,756 |
2,714 |
2,743 |
Physiology |
2,195 |
2,164 |
2,455 |
2,606 |
2,597 |
2,678 |
2,681 |
2,777 |
Zoology |
994 |
964 |
976 |
726 |
661 |
589 |
686 |
666 |
Biological sciences nec |
7,218 |
7,637 |
8,413 |
8,468 |
9,237 |
9,478 |
10,126 |
11,050 |
Communicationa |
ne |
ne |
4,528 |
5,224 |
6,091 |
6,274 |
6,913 |
6,978 |
Computer sciences |
28,760 |
30,511 |
30,082 |
31,338 |
32,198 |
32,782 |
32,861 |
34,108 |
Earth, atmospheric, and ocean sciences |
11,431 |
11,376 |
10,892 |
11,171 |
11,589 |
12,318 |
12,404 |
12,617 |
Atmospheric sciences |
930 |
959 |
1,011 |
1,169 |
1,132 |
1,193 |
1,197 |
1,277 |
Geosciences |
5,497 |
5,473 |
5,423 |
5,409 |
5,825 |
6,352 |
6,450 |
6,686 |
Oceanography |
2,231 |
2,177 |
2,144 |
2,120 |
2,197 |
2,130 |
2,199 |
2,158 |
Earth, atmospheric, and ocean sciences nec |
2,773 |
2,767 |
2,314 |
2,473 |
2,435 |
2,643 |
2,558 |
2,496 |
Family and consumer sciences and human sciencesa |
ne |
ne |
1,594 |
1,936 |
2,168 |
2,377 |
2,616 |
2,410 |
Mathematical sciences |
15,571 |
15,966 |
15,668 |
16,241 |
16,885 |
17,606 |
18,303 |
18,990 |
Mathematics and applied mathematics |
12,348 |
12,587 |
12,279 |
12,530 |
12,950 |
13,427 |
14,014 |
14,264 |
Statistics |
3,223 |
3,379 |
3,389 |
3,711 |
3,935 |
4,179 |
4,289 |
4,726 |
Multidisciplinary and interdisciplinary studiesa |
ne |
ne |
2,398 |
3,110 |
3,957 |
5,063 |
4,103 |
3,987 |
Neurosciencea |
na |
na |
1,530 |
1,909 |
2,261 |
2,682 |
3,911 |
4,333 |
Physical sciences |
32,841 |
33,091 |
32,857 |
33,254 |
34,181 |
34,856 |
35,643 |
35,868 |
Astronomy |
1,158 |
1,186 |
1,185 |
1,233 |
1,348 |
1,292 |
1,325 |
1,245 |
Chemistry |
18,942 |
19,001 |
18,887 |
19,073 |
19,682 |
20,011 |
20,403 |
20,672 |
Physics |
12,439 |
12,596 |
12,570 |
12,626 |
12,771 |
13,085 |
13,413 |
13,522 |
Physical sciences nec |
302 |
308 |
215 |
322 |
380 |
468 |
502 |
429 |
Psychologyb |
38,994 |
41,166 |
40,678 |
42,103 |
40,373 |
38,571 |
38,548 |
38,325 |
Clinical psychology |
10,168 |
10,687 |
10,691 |
10,349 |
10,144 |
9,378 |
8,094 |
7,630 |
Psychology, general |
12,148 |
12,824 |
12,550 |
12,925 |
11,443 |
10,716 |
12,872 |
12,897 |
Psychology nec |
16,678 |
17,655 |
17,437 |
18,829 |
18,786 |
18,477 |
17,582 |
17,798 |
Social sciences |
65,991 |
67,984 |
66,752 |
68,225 |
71,569 |
72,929 |
73,492 |
71,883 |
Agricultural economics |
1,836 |
1,856 |
1,762 |
1,868 |
1,896 |
1,825 |
1,767 |
1,692 |
Anthropology (cultural and social) |
6,219 |
6,303 |
6,315 |
6,459 |
6,462 |
6,596 |
6,471 |
6,454 |
Economics (except agricultural) |
10,018 |
10,181 |
10,358 |
10,541 |
11,433 |
11,879 |
12,391 |
12,476 |
Geography |
3,158 |
3,166 |
3,166 |
3,299 |
3,331 |
3,373 |
3,383 |
3,319 |
History and philosophy of science |
602 |
726 |
661 |
798 |
653 |
476 |
425 |
420 |
Linguistics |
2,488 |
2,453 |
2,275 |
2,328 |
2,386 |
2,419 |
2,589 |
2,629 |
Political science |
23,109 |
23,473 |
23,209 |
23,640 |
25,970 |
26,850 |
28,554 |
28,439 |
Sociology |
6,682 |
6,819 |
6,750 |
7,110 |
7,006 |
7,222 |
7,148 |
6,761 |
Sociology and anthropology |
579 |
559 |
428 |
393 |
301 |
171 |
173 |
139 |
Social sciences nec |
11,300 |
12,448 |
11,828 |
11,789 |
12,131 |
12,118 |
10,591 |
9,554 |
Engineering |
87,818 |
93,155 |
94,313 |
98,255 |
104,937 |
109,792 |
108,153 |
109,589 |
Aerospace engineering |
3,374 |
3,482 |
3,482 |
3,691 |
3,974 |
4,211 |
4,251 |
3,813 |
Agricultural engineering |
893 |
917 |
917 |
1,022 |
1,084 |
1,198 |
1,372 |
1,254 |
Architecturea |
na |
na |
4,097 |
5,211 |
6,112 |
6,079 |
2,772 |
2,045 |
Biomedical engineering |
5,666 |
5,898 |
5,921 |
6,262 |
6,859 |
7,418 |
7,931 |
7,978 |
Chemical engineering |
6,218 |
6,275 |
6,459 |
6,762 |
7,110 |
7,516 |
7,639 |
8,059 |
Civil engineeringa |
13,074 |
14,691 |
11,336 |
11,909 |
13,503 |
14,191 |
14,363 |
14,580 |
Electrical engineering |
27,379 |
28,934 |
29,076 |
29,212 |
29,282 |
29,977 |
30,735 |
31,526 |
Engineering science |
1,656 |
1,454 |
1,432 |
1,486 |
1,490 |
1,502 |
1,574 |
1,705 |
Industrial engineering |
6,421 |
7,036 |
7,422 |
8,216 |
8,362 |
8,371 |
8,251 |
8,115 |
Mechanical engineering |
12,666 |
13,170 |
13,160 |
13,763 |
15,609 |
16,625 |
16,084 |
17,000 |
Metallurgical and materials engineering |
4,627 |
4,667 |
4,613 |
4,811 |
5,181 |
5,551 |
5,877 |
6,126 |
Mining engineering |
181 |
209 |
142 |
207 |
212 |
361 |
414 |
241 |
Nuclear engineering |
910 |
960 |
951 |
941 |
968 |
1,123 |
1,165 |
1,162 |
Petroleum engineering |
647 |
792 |
792 |
828 |
993 |
1,063 |
1,064 |
1,289 |
Engineering nec |
4,106 |
4,670 |
4,513 |
3,934 |
4,198 |
4,606 |
4,661 |
4,696 |
Healthb |
69,213 |
67,884 |
65,823 |
66,053 |
57,617 |
52,078 |
46,124 |
45,114 |
Clinical medicine |
16,567 |
17,451 |
15,478 |
16,965 |
16,725 |
17,704 |
17,853 |
17,195 |
Anesthesiology |
1,189 |
826 |
826 |
562 |
400 |
321 |
5 |
3 |
Cardiology |
32 |
51 |
51 |
38 |
38 |
48 |
54 |
41 |
Endocrinology |
42 |
37 |
37 |
60 |
47 |
48 |
48 |
46 |
Gastroenterology |
17 |
28 |
28 |
15 |
15 |
7 |
7 |
2 |
Hematology |
14 |
9 |
9 |
8 |
9 |
4 |
1 |
5 |
Neurologya |
2,885 |
3,283 |
1,707 |
1,416 |
1,284 |
1,039 |
211 |
169 |
Obstetrics and gynecology |
47 |
71 |
71 |
65 |
69 |
55 |
75 |
73 |
Oncology and cancer research |
340 |
355 |
264 |
260 |
258 |
229 |
248 |
240 |
Ophthalmology |
389 |
385 |
378 |
1 |
1 |
5 |
2 |
2 |
Otorhinolaryngology |
8 |
7 |
7 |
9 |
2 |
3 |
1 |
1 |
Pediatrics |
245 |
267 |
267 |
169 |
162 |
183 |
117 |
113 |
Preventive medicine and community health |
8,590 |
9,292 |
9,585 |
11,679 |
12,219 |
13,312 |
14,913 |
14,913 |
Psychiatry |
126 |
153 |
93 |
95 |
114 |
122 |
88 |
100 |
Pulmonary disease |
10 |
23 |
23 |
13 |
12 |
12 |
14 |
12 |
Radiology |
184 |
213 |
224 |
225 |
271 |
284 |
261 |
262 |
Surgery |
85 |
45 |
29 |
17 |
26 |
49 |
20 |
25 |
Clinical medicine nec |
2,364 |
2,406 |
1,879 |
2,333 |
1,798 |
1,983 |
1,788 |
1,188 |
Other healthb |
52,646 |
50,433 |
50,345 |
49,088 |
40,892 |
34,374 |
28,271 |
27,919 |
Dental sciences |
1,340 |
1,265 |
1,406 |
1,372 |
1,564 |
1,494 |
1,553 |
1,528 |
Nursing |
13,979 |
13,137 |
13,128 |
13,204 |
9,544 |
4,980 |
3,294 |
3,403 |
Pharmaceutical sciences |
4,480 |
3,756 |
3,852 |
2,979 |
3,182 |
3,032 |
2,836 |
2,987 |
Speech pathology and audiology |
11,506 |
12,698 |
12,679 |
12,438 |
12,466 |
12,554 |
12,116 |
11,867 |
Veterinary sciences |
1,663 |
1,634 |
1,891 |
1,860 |
1,637 |
1,651 |
1,271 |
1,250 |
Other health nec |
19,678 |
17,943 |
17,389 |
17,235 |
12,499 |
10,663 |
7,201 |
6,884 |