All surveyed fields |
372,074 |
379,576 |
387,725 |
396,733 |
399,013 |
402,741 |
399,959 |
400,950 |
Science and engineering |
306,122 |
314,948 |
324,148 |
333,478 |
345,236 |
353,439 |
356,869 |
357,583 |
Science |
222,064 |
225,512 |
233,884 |
238,463 |
245,153 |
250,472 |
255,327 |
255,417 |
Agricultural sciences |
11,561 |
11,721 |
12,016 |
12,521 |
13,224 |
13,793 |
14,172 |
14,379 |
Biological sciences |
45,934 |
46,790 |
46,594 |
46,699 |
46,533 |
47,208 |
47,606 |
48,727 |
Anatomy |
607 |
638 |
510 |
456 |
528 |
519 |
427 |
442 |
Biochemistry |
3,982 |
4,130 |
4,075 |
3,659 |
3,634 |
3,660 |
3,508 |
3,484 |
Biology |
10,027 |
9,669 |
9,464 |
10,001 |
10,008 |
9,976 |
9,691 |
9,590 |
Biometry and epidemiology |
2,881 |
3,105 |
3,260 |
3,357 |
3,134 |
3,684 |
4,478 |
4,940 |
Biophysics |
772 |
766 |
745 |
676 |
641 |
645 |
611 |
592 |
Botany |
1,773 |
1,812 |
1,742 |
1,726 |
1,753 |
1,789 |
1,814 |
1,742 |
Cell biology |
4,149 |
4,285 |
4,396 |
4,581 |
4,522 |
4,437 |
4,064 |
3,968 |
Ecology |
1,810 |
1,789 |
1,645 |
1,649 |
1,383 |
1,444 |
1,338 |
1,398 |
Entomology and parasitology |
1,079 |
1,043 |
1,043 |
1,047 |
1,047 |
1,084 |
1,089 |
1,118 |
Genetics |
1,286 |
1,285 |
1,228 |
1,233 |
1,247 |
1,343 |
1,441 |
1,413 |
Microbiology, immunology, and virology |
3,336 |
3,309 |
3,273 |
3,195 |
3,140 |
3,056 |
3,121 |
3,069 |
Nutrition |
3,653 |
3,817 |
3,457 |
3,579 |
3,603 |
3,652 |
3,457 |
3,453 |
Pathology |
1,006 |
955 |
867 |
859 |
824 |
830 |
780 |
764 |
Pharmacology |
1,923 |
1,978 |
2,010 |
1,982 |
2,058 |
1,965 |
1,953 |
2,002 |
Physiology |
1,358 |
1,396 |
1,691 |
1,774 |
1,854 |
1,942 |
2,008 |
1,988 |
Zoology |
1,138 |
1,078 |
1,102 |
919 |
869 |
889 |
1,053 |
1,076 |
Biological sciences nec |
5,154 |
5,735 |
6,086 |
6,006 |
6,288 |
6,293 |
6,773 |
7,688 |
Communicationa |
ne |
ne |
5,094 |
5,675 |
6,319 |
6,359 |
6,757 |
6,756 |
Computer sciences |
26,903 |
27,407 |
27,026 |
27,698 |
29,133 |
29,838 |
30,338 |
30,299 |
Earth, atmospheric, and ocean sciences |
11,656 |
11,509 |
11,051 |
11,218 |
11,489 |
12,239 |
12,183 |
12,234 |
Atmospheric sciences |
1,039 |
1,059 |
1,120 |
1,328 |
1,287 |
1,378 |
1,428 |
1,471 |
Geosciences |
5,627 |
5,648 |
5,586 |
5,580 |
5,960 |
6,523 |
6,560 |
6,723 |
Oceanography |
2,196 |
2,104 |
2,056 |
2,028 |
2,033 |
1,914 |
1,986 |
1,834 |
Earth, atmospheric, and ocean sciences nec |
2,794 |
2,698 |
2,289 |
2,282 |
2,209 |
2,424 |
2,209 |
2,206 |
Family and consumer sciences and human sciencesa |
ne |
ne |
2,291 |
2,645 |
2,675 |
3,138 |
3,506 |
3,316 |
Mathematical sciences |
14,594 |
15,006 |
14,883 |
15,288 |
15,957 |
16,523 |
16,927 |
17,144 |
Mathematics and applied mathematics |
11,457 |
11,632 |
11,521 |
11,553 |
12,275 |
12,516 |
12,828 |
12,904 |
Statistics |
3,137 |
3,374 |
3,362 |
3,735 |
3,682 |
4,007 |
4,099 |
4,240 |
Multidisciplinary and interdisciplinary studiesa |
ne |
ne |
2,944 |
3,586 |
4,115 |
5,045 |
4,629 |
4,131 |
Neurosciencea |
na |
na |
1,007 |
1,168 |
1,308 |
1,673 |
2,276 |
2,476 |
Physical sciences |
26,520 |
26,502 |
26,234 |
26,566 |
27,342 |
27,770 |
28,298 |
28,693 |
Astronomy |
679 |
698 |
697 |
704 |
821 |
707 |
695 |
746 |
Chemistry |
15,394 |
15,263 |
15,137 |
15,373 |
15,872 |
16,025 |
16,302 |
16,731 |
Physics |
9,963 |
10,030 |
10,016 |
10,085 |
10,295 |
10,661 |
10,866 |
10,867 |
Physical sciences nec |
484 |
511 |
384 |
404 |
354 |
377 |
435 |
349 |
Psychologyb |
22,204 |
23,759 |
23,220 |
23,681 |
22,917 |
22,228 |
23,325 |
23,784 |
Clinical psychology |
3,006 |
3,075 |
3,084 |
3,001 |
3,174 |
3,284 |
3,373 |
3,131 |
Psychology, general |
8,752 |
8,671 |
8,608 |
8,909 |
8,185 |
7,476 |
7,749 |
8,025 |
Psychology nec |
10,446 |
12,013 |
11,528 |
11,771 |
11,558 |
11,468 |
12,203 |
12,628 |
Social sciences |
62,692 |
62,818 |
61,524 |
61,718 |
64,141 |
64,658 |
65,310 |
63,478 |
Agricultural economics |
2,081 |
2,047 |
1,910 |
2,045 |
2,130 |
2,083 |
2,013 |
1,939 |
Anthropology (cultural and social) |
5,800 |
5,711 |
5,741 |
5,848 |
5,913 |
6,039 |
5,998 |
5,865 |
Economics (except agricultural) |
7,834 |
7,814 |
7,956 |
8,132 |
8,783 |
8,900 |
9,173 |
8,975 |
Geography |
3,921 |
3,771 |
3,771 |
3,807 |
3,848 |
4,022 |
4,109 |
3,936 |
History and philosophy of science |
515 |
677 |
663 |
733 |
706 |
407 |
324 |
312 |
Linguistics |
2,203 |
2,159 |
2,079 |
2,207 |
2,260 |
2,214 |
2,325 |
2,342 |
Political science |
20,686 |
20,963 |
20,663 |
20,444 |
21,582 |
22,370 |
23,851 |
23,533 |
Sociology |
6,186 |
6,239 |
6,213 |
6,643 |
6,559 |
6,726 |
6,660 |
6,387 |
Sociology and anthropology |
711 |
728 |
579 |
542 |
467 |
231 |
202 |
173 |
Social sciences nec |
12,755 |
12,709 |
11,949 |
11,317 |
11,893 |
11,666 |
10,655 |
10,016 |
Engineering |
84,058 |
89,436 |
90,264 |
95,015 |
100,083 |
102,967 |
101,542 |
102,166 |
Aerospace engineering |
3,154 |
3,275 |
3,275 |
3,533 |
3,929 |
4,163 |
4,251 |
4,069 |
Agricultural engineering |
1,011 |
1,059 |
1,059 |
1,173 |
1,230 |
1,277 |
1,406 |
1,301 |
Architecturea |
na |
na |
3,610 |
4,597 |
5,362 |
5,389 |
2,465 |
1,892 |
Biomedical engineering |
3,984 |
4,308 |
4,308 |
4,783 |
4,873 |
5,152 |
5,468 |
5,570 |
Chemical engineering |
5,052 |
5,104 |
5,248 |
5,458 |
5,717 |
5,914 |
5,953 |
6,022 |
Civil engineeringa |
13,783 |
15,204 |
12,349 |
12,974 |
14,233 |
14,820 |
14,849 |
14,912 |
Electrical engineering |
25,047 |
26,639 |
26,833 |
27,218 |
27,594 |
27,495 |
28,229 |
28,435 |
Engineering science |
1,088 |
1,115 |
1,059 |
1,255 |
1,361 |
1,297 |
1,354 |
1,442 |
Industrial engineering |
8,270 |
9,023 |
8,714 |
9,491 |
9,137 |
8,547 |
8,434 |
8,745 |
Mechanical engineering |
12,686 |
12,814 |
12,795 |
13,321 |
14,502 |
15,632 |
15,331 |
15,593 |
Metallurgical and materials engineering |
4,010 |
4,078 |
4,027 |
4,144 |
4,389 |
4,680 |
4,996 |
5,141 |
Mining engineering |
238 |
296 |
211 |
283 |
302 |
408 |
498 |
355 |
Nuclear engineering |
992 |
1,086 |
1,058 |
1,065 |
1,110 |
1,315 |
1,352 |
1,374 |
Petroleum engineering |
696 |
887 |
887 |
854 |
1,009 |
1,105 |
1,127 |
1,351 |
Engineering nec |
4,047 |
4,548 |
4,831 |
4,866 |
5,335 |
5,773 |
5,829 |
5,964 |
Healthb |
65,952 |
64,628 |
63,577 |
63,255 |
53,777 |
49,302 |
43,090 |
43,367 |
Clinical medicine |
12,447 |
14,240 |
13,275 |
14,232 |
14,385 |
15,472 |
15,807 |
16,184 |
Anesthesiology |
547 |
388 |
388 |
157 |
104 |
11 |
3 |
3 |
Cardiology |
3 |
0 |
0 |
25 |
24 |
29 |
31 |
34 |
Endocrinology |
42 |
40 |
40 |
44 |
50 |
52 |
55 |
52 |
Gastroenterology |
18 |
19 |
19 |
7 |
13 |
2 |
5 |
2 |
Hematology |
14 |
8 |
8 |
5 |
8 |
5 |
1 |
5 |
Neurologya |
1,548 |
1,856 |
814 |
671 |
637 |
454 |
87 |
65 |
Obstetrics and gynecology |
16 |
14 |
14 |
5 |
8 |
11 |
9 |
81 |
Oncology and cancer research |
179 |
202 |
171 |
124 |
149 |
127 |
150 |
153 |
Ophthalmology |
406 |
407 |
379 |
1 |
1 |
5 |
2 |
2 |
Otorhinolaryngology |
12 |
12 |
12 |
14 |
4 |
1 |
2 |
2 |
Pediatrics |
211 |
231 |
231 |
147 |
114 |
119 |
124 |
125 |
Preventive medicine and community health |
7,531 |
8,738 |
9,115 |
10,389 |
10,872 |
12,078 |
13,366 |
14,090 |
Psychiatry |
236 |
233 |
173 |
133 |
165 |
177 |
19 |
24 |
Pulmonary disease |
9 |
10 |
10 |
12 |
13 |
12 |
14 |
12 |
Radiology |
198 |
253 |
264 |
273 |
306 |
284 |
242 |
249 |
Surgery |
99 |
40 |
24 |
18 |
28 |
48 |
17 |
27 |
Clinical medicine nec |
1,378 |
1,789 |
1,613 |
2,207 |
1,889 |
2,057 |
1,680 |
1,258 |
Other healthb |
53,505 |
50,388 |
50,302 |
49,023 |
39,392 |
33,830 |
27,283 |
27,183 |
Dental sciences |
1,311 |
1,190 |
1,298 |
1,333 |
1,303 |
1,216 |
1,425 |
1,309 |
Nursing |
22,280 |
20,303 |
20,303 |
18,975 |
11,690 |
7,540 |
5,138 |
5,502 |
Pharmaceutical sciences |
4,257 |
3,493 |
3,589 |
3,211 |
3,483 |
3,435 |
3,371 |
3,394 |
Speech pathology and audiology |
8,769 |
9,601 |
9,593 |
9,543 |
9,624 |
9,470 |
8,618 |
8,362 |
Veterinary sciences |
1,951 |
1,872 |
2,124 |
2,244 |
1,981 |
1,997 |
1,757 |
1,659 |
Other health nec |
14,937 |
13,929 |
13,395 |
13,717 |
11,311 |
10,172 |
6,974 |
6,957 |