All surveyed fields |
597,643 |
607,823 |
619,499 |
631,489 |
631,645 |
632,652 |
626,820 |
627,243 |
Science and engineering |
486,287 |
502,375 |
516,199 |
529,275 |
545,685 |
556,532 |
560,941 |
561,418 |
Science |
363,246 |
372,120 |
384,523 |
391,419 |
401,008 |
407,291 |
414,440 |
413,033 |
Agricultural sciences |
13,016 |
13,222 |
13,528 |
14,153 |
15,200 |
15,656 |
16,129 |
16,234 |
Biological sciences |
69,941 |
71,663 |
71,932 |
72,666 |
73,304 |
74,928 |
75,423 |
76,447 |
Anatomy |
961 |
979 |
867 |
764 |
833 |
849 |
762 |
700 |
Biochemistry |
5,824 |
5,959 |
5,853 |
5,473 |
5,271 |
5,308 |
5,183 |
5,245 |
Biology |
16,463 |
16,212 |
15,898 |
16,514 |
16,840 |
17,210 |
16,911 |
16,321 |
Biometry and epidemiology |
4,789 |
5,483 |
5,694 |
5,971 |
5,739 |
6,398 |
6,786 |
7,800 |
Biophysics |
1,203 |
1,214 |
1,193 |
1,084 |
1,042 |
1,072 |
1,016 |
976 |
Botany |
1,850 |
1,891 |
1,821 |
1,803 |
1,831 |
1,863 |
1,915 |
1,852 |
Cell biology |
6,553 |
6,696 |
6,839 |
7,096 |
7,153 |
7,047 |
6,905 |
6,799 |
Ecology |
2,162 |
2,191 |
2,026 |
2,026 |
1,746 |
1,828 |
1,713 |
1,667 |
Entomology and parasitology |
1,114 |
1,078 |
1,078 |
1,079 |
1,079 |
1,116 |
1,119 |
1,187 |
Genetics |
2,154 |
2,152 |
2,120 |
2,120 |
2,242 |
2,333 |
2,403 |
2,342 |
Microbiology, immunology, and virology |
5,324 |
5,314 |
5,212 |
5,054 |
4,968 |
4,896 |
5,031 |
4,950 |
Nutrition |
5,042 |
5,250 |
4,890 |
5,177 |
5,330 |
5,548 |
5,345 |
5,336 |
Pathology |
1,612 |
1,633 |
1,580 |
1,618 |
1,450 |
1,376 |
1,313 |
1,196 |
Pharmacology |
2,985 |
3,030 |
3,013 |
3,005 |
3,163 |
3,101 |
3,053 |
3,088 |
Physiology |
2,416 |
2,406 |
2,738 |
2,863 |
2,866 |
2,879 |
3,000 |
3,046 |
Zoology |
1,145 |
1,084 |
1,108 |
925 |
875 |
896 |
1,060 |
1,083 |
Biological sciences nec |
8,344 |
9,091 |
10,002 |
10,094 |
10,876 |
11,208 |
11,908 |
12,859 |
Communicationa |
ne |
ne |
7,303 |
8,444 |
9,418 |
9,825 |
11,029 |
11,010 |
Computer sciences |
47,653 |
48,959 |
48,246 |
49,553 |
51,161 |
51,546 |
51,234 |
51,789 |
Earth, atmospheric, and ocean sciences |
14,920 |
14,675 |
14,100 |
14,389 |
14,839 |
15,655 |
15,820 |
16,069 |
Atmospheric sciences |
1,079 |
1,117 |
1,178 |
1,400 |
1,355 |
1,455 |
1,513 |
1,546 |
Geosciences |
7,177 |
7,061 |
7,020 |
7,089 |
7,539 |
8,251 |
8,361 |
8,659 |
Oceanography |
2,770 |
2,663 |
2,615 |
2,634 |
2,633 |
2,556 |
2,680 |
2,642 |
Earth, atmospheric, and ocean sciences nec |
3,894 |
3,834 |
3,287 |
3,266 |
3,312 |
3,393 |
3,266 |
3,222 |
Family and consumer sciences and human sciencesa |
ne |
ne |
2,780 |
3,549 |
3,794 |
4,191 |
4,509 |
4,110 |
Mathematical sciences |
20,815 |
21,335 |
20,975 |
21,400 |
22,226 |
23,136 |
23,801 |
24,575 |
Mathematics and applied mathematics |
16,649 |
16,894 |
16,528 |
16,449 |
17,204 |
17,589 |
18,157 |
18,577 |
Statistics |
4,166 |
4,441 |
4,447 |
4,951 |
5,022 |
5,547 |
5,644 |
5,998 |
Multidisciplinary and interdisciplinary studiesa |
ne |
ne |
4,484 |
5,559 |
6,557 |
7,944 |
6,537 |
6,038 |
Neurosciencea |
na |
na |
1,584 |
2,012 |
2,356 |
2,798 |
4,117 |
4,547 |
Physical sciences |
36,901 |
37,111 |
36,824 |
37,319 |
38,149 |
38,973 |
39,694 |
39,928 |
Astronomy |
1,211 |
1,233 |
1,232 |
1,275 |
1,409 |
1,331 |
1,345 |
1,278 |
Chemistry |
21,351 |
21,424 |
21,298 |
21,574 |
22,094 |
22,436 |
22,802 |
23,117 |
Physics |
13,722 |
13,845 |
13,816 |
13,862 |
14,060 |
14,507 |
14,829 |
14,940 |
Physical sciences nec |
617 |
609 |
478 |
608 |
586 |
699 |
718 |
593 |
Psychologyb |
57,653 |
60,284 |
59,617 |
58,991 |
56,184 |
53,419 |
54,486 |
54,117 |
Clinical psychology |
13,947 |
14,517 |
14,495 |
13,691 |
13,113 |
12,155 |
10,468 |
9,971 |
Psychology, general |
16,622 |
18,366 |
17,923 |
17,322 |
15,148 |
14,022 |
17,326 |
17,073 |
Psychology nec |
27,084 |
27,401 |
27,199 |
27,978 |
27,923 |
27,242 |
26,692 |
27,073 |
Social sciences |
102,347 |
104,871 |
103,150 |
103,384 |
107,820 |
109,220 |
111,661 |
108,169 |
Agricultural economics |
2,158 |
2,126 |
1,989 |
2,132 |
2,222 |
2,180 |
2,095 |
2,045 |
Anthropology (cultural and social) |
8,150 |
8,099 |
8,129 |
8,333 |
8,359 |
8,528 |
8,406 |
8,247 |
Economics (except agricultural) |
12,132 |
12,328 |
12,597 |
12,971 |
13,993 |
14,317 |
14,920 |
14,959 |
Geography |
4,750 |
4,660 |
4,660 |
4,745 |
4,810 |
5,059 |
5,188 |
5,016 |
History and philosophy of science |
968 |
1,119 |
1,054 |
1,177 |
1,006 |
705 |
597 |
508 |
Linguistics |
3,074 |
3,076 |
2,879 |
3,095 |
3,170 |
3,132 |
3,219 |
3,256 |
Political science |
41,784 |
41,854 |
41,349 |
40,871 |
43,919 |
45,045 |
49,660 |
48,855 |
Sociology |
9,035 |
9,734 |
9,642 |
10,002 |
9,731 |
9,883 |
9,671 |
8,887 |
Sociology and anthropology |
837 |
831 |
682 |
653 |
576 |
329 |
288 |
270 |
Social sciences nec |
19,459 |
21,044 |
20,169 |
19,405 |
20,034 |
20,042 |
17,617 |
16,126 |
Engineering |
123,041 |
130,255 |
131,676 |
137,856 |
144,677 |
149,241 |
146,501 |
148,385 |
Aerospace engineering |
4,482 |
4,616 |
4,616 |
4,902 |
5,266 |
5,540 |
5,691 |
5,069 |
Agricultural engineering |
1,073 |
1,126 |
1,126 |
1,233 |
1,303 |
1,457 |
1,656 |
1,552 |
Architecturea |
na |
na |
4,601 |
5,905 |
6,804 |
6,795 |
3,111 |
2,363 |
Biomedical engineering |
6,482 |
6,881 |
6,904 |
7,339 |
7,904 |
8,497 |
9,175 |
9,157 |
Chemical engineering |
7,261 |
7,383 |
7,584 |
7,892 |
8,188 |
8,668 |
8,828 |
9,222 |
Civil engineeringa |
17,802 |
19,867 |
16,071 |
16,931 |
18,638 |
19,559 |
19,596 |
19,922 |
Electrical engineering |
38,265 |
40,207 |
40,588 |
41,164 |
41,218 |
41,336 |
41,580 |
42,347 |
Engineering science |
2,046 |
1,843 |
1,806 |
2,099 |
2,168 |
2,071 |
2,101 |
2,227 |
Industrial engineering |
13,829 |
14,290 |
14,474 |
15,692 |
15,825 |
15,205 |
14,494 |
14,469 |
Mechanical engineering |
17,919 |
18,366 |
18,347 |
19,585 |
21,243 |
22,509 |
21,883 |
23,088 |
Metallurgical and materials engineering |
5,268 |
5,365 |
5,314 |
5,539 |
5,863 |
6,274 |
6,649 |
6,985 |
Mining engineering |
244 |
307 |
222 |
290 |
312 |
419 |
500 |
356 |
Nuclear engineering |
1,099 |
1,208 |
1,180 |
1,201 |
1,243 |
1,459 |
1,499 |
1,513 |
Petroleum engineering |
813 |
1,014 |
1,014 |
1,009 |
1,190 |
1,295 |
1,301 |
1,525 |
Engineering nec |
6,458 |
7,782 |
7,829 |
7,075 |
7,512 |
8,157 |
8,437 |
8,590 |
Healthb |
111,356 |
105,448 |
103,300 |
102,214 |
85,960 |
76,120 |
65,879 |
65,825 |
Clinical medicine |
23,441 |
24,616 |
22,751 |
23,939 |
24,125 |
25,699 |
26,634 |
26,798 |
Anesthesiology |
1,370 |
883 |
883 |
589 |
402 |
325 |
8 |
3 |
Cardiology |
32 |
51 |
51 |
47 |
50 |
51 |
61 |
44 |
Endocrinology |
42 |
40 |
40 |
64 |
50 |
53 |
56 |
52 |
Gastroenterology |
18 |
28 |
28 |
15 |
15 |
7 |
7 |
2 |
Hematology |
14 |
9 |
9 |
8 |
11 |
6 |
1 |
5 |
Neurologya |
2,981 |
3,381 |
1,751 |
1,462 |
1,323 |
1,056 |
219 |
171 |
Obstetrics and gynecology |
54 |
81 |
81 |
83 |
89 |
79 |
100 |
91 |
Oncology and cancer research |
341 |
355 |
264 |
260 |
272 |
232 |
255 |
248 |
Ophthalmology |
414 |
407 |
379 |
1 |
1 |
5 |
2 |
2 |
Otorhinolaryngology |
14 |
15 |
15 |
14 |
4 |
4 |
2 |
2 |
Pediatrics |
284 |
302 |
302 |
207 |
186 |
211 |
132 |
125 |
Preventive medicine and community health |
14,320 |
15,561 |
16,209 |
17,901 |
18,797 |
20,445 |
23,001 |
23,700 |
Psychiatry |
274 |
278 |
218 |
188 |
233 |
260 |
88 |
100 |
Pulmonary disease |
10 |
24 |
24 |
13 |
13 |
12 |
14 |
12 |
Radiology |
288 |
270 |
281 |
320 |
385 |
396 |
339 |
335 |
Surgery |
105 |
47 |
31 |
31 |
40 |
59 |
30 |
35 |
Clinical medicine nec |
2,880 |
2,884 |
2,185 |
2,736 |
2,254 |
2,498 |
2,319 |
1,871 |
Other healthb |
87,915 |
80,832 |
80,549 |
78,275 |
61,835 |
50,421 |
39,245 |
39,027 |
Dental sciences |
1,614 |
1,537 |
1,688 |
1,643 |
1,770 |
1,661 |
1,764 |
1,707 |
Nursing |
35,846 |
31,747 |
31,803 |
30,471 |
21,355 |
12,107 |
7,269 |
7,449 |
Pharmaceutical sciences |
6,315 |
4,964 |
5,066 |
4,251 |
4,443 |
4,291 |
4,056 |
4,256 |
Speech pathology and audiology |
14,847 |
16,237 |
16,229 |
15,968 |
14,641 |
14,645 |
14,203 |
13,918 |
Veterinary sciences |
2,067 |
2,020 |
2,371 |
2,478 |
2,170 |
2,211 |
1,894 |
1,794 |
Other health nec |
27,226 |
24,327 |
23,392 |
23,464 |
17,456 |
15,506 |
10,059 |
9,903 |