All surveyed fields |
116,482 |
120,236 |
122,449 |
130,635 |
134,756 |
136,487 |
136,610 |
137,767 |
Science and engineering |
94,413 |
98,205 |
100,990 |
108,819 |
115,755 |
118,492 |
120,135 |
121,856 |
Science |
68,537 |
70,387 |
72,725 |
78,227 |
83,252 |
84,689 |
86,810 |
87,523 |
Agricultural sciences |
2,206 |
2,313 |
2,356 |
2,597 |
2,994 |
3,121 |
3,053 |
3,040 |
Biological sciences |
13,055 |
13,485 |
13,749 |
14,528 |
15,443 |
16,038 |
16,599 |
17,080 |
Anatomy |
213 |
252 |
194 |
146 |
181 |
154 |
153 |
175 |
Biochemistry |
992 |
945 |
945 |
966 |
949 |
880 |
900 |
972 |
Biology |
2,994 |
3,083 |
3,005 |
3,221 |
3,421 |
3,494 |
3,491 |
3,346 |
Biometry and epidemiology |
974 |
1,126 |
1,171 |
1,147 |
1,198 |
1,510 |
1,584 |
1,908 |
Biophysics |
186 |
197 |
183 |
199 |
161 |
190 |
173 |
151 |
Botany |
318 |
333 |
331 |
304 |
340 |
339 |
334 |
368 |
Cell biology |
1,294 |
1,249 |
1,254 |
1,372 |
1,461 |
1,500 |
1,451 |
1,352 |
Ecology |
294 |
361 |
337 |
355 |
285 |
335 |
288 |
303 |
Entomology and parasitology |
169 |
161 |
161 |
167 |
193 |
193 |
190 |
195 |
Genetics |
348 |
330 |
319 |
370 |
405 |
402 |
417 |
364 |
Microbiology, immunology, and virology |
853 |
741 |
724 |
772 |
799 |
789 |
845 |
838 |
Nutrition |
905 |
1,121 |
1,035 |
1,110 |
1,121 |
1,275 |
1,156 |
1,156 |
Pathology |
269 |
257 |
266 |
321 |
266 |
230 |
227 |
231 |
Pharmacology |
469 |
437 |
437 |
487 |
577 |
549 |
518 |
519 |
Physiology |
597 |
603 |
669 |
690 |
751 |
727 |
772 |
901 |
Zoology |
179 |
165 |
215 |
145 |
133 |
119 |
128 |
139 |
Biological sciences nec |
2,001 |
2,124 |
2,503 |
2,756 |
3,202 |
3,352 |
3,972 |
4,162 |
Communicationa |
ne |
ne |
1,531 |
1,912 |
2,119 |
2,089 |
2,367 |
2,366 |
Computer sciences |
8,983 |
9,352 |
9,256 |
10,434 |
10,557 |
10,583 |
10,995 |
11,688 |
Earth, atmospheric, and ocean sciences |
2,795 |
2,861 |
2,749 |
2,904 |
3,153 |
3,445 |
3,408 |
3,451 |
Atmospheric sciences |
207 |
233 |
243 |
263 |
250 |
279 |
266 |
300 |
Geosciences |
1,348 |
1,410 |
1,405 |
1,429 |
1,682 |
1,887 |
1,839 |
1,868 |
Oceanography |
457 |
412 |
402 |
466 |
517 |
502 |
520 |
481 |
Earth, atmospheric, and ocean sciences nec |
783 |
806 |
699 |
746 |
704 |
777 |
783 |
802 |
Family and consumer sciences and human sciencesa |
ne |
ne |
492 |
579 |
633 |
741 |
832 |
809 |
Mathematical sciences |
4,342 |
4,595 |
4,432 |
4,591 |
4,888 |
5,193 |
5,594 |
5,738 |
Mathematics and applied mathematics |
3,398 |
3,518 |
3,352 |
3,409 |
3,611 |
3,801 |
4,108 |
4,064 |
Statistics |
944 |
1,077 |
1,080 |
1,182 |
1,277 |
1,392 |
1,486 |
1,674 |
Multidisciplinary and interdisciplinary studiesa |
ne |
ne |
771 |
1,140 |
1,412 |
1,759 |
1,384 |
1,374 |
Neurosciencea |
na |
na |
273 |
304 |
395 |
505 |
728 |
839 |
Physical sciences |
6,626 |
6,787 |
6,711 |
6,892 |
7,276 |
7,577 |
7,762 |
7,615 |
Astronomy |
204 |
207 |
207 |
225 |
250 |
234 |
267 |
235 |
Chemistry |
3,900 |
3,972 |
3,938 |
4,161 |
4,331 |
4,557 |
4,585 |
4,487 |
Physics |
2,409 |
2,534 |
2,523 |
2,406 |
2,571 |
2,663 |
2,766 |
2,783 |
Physical sciences nec |
113 |
74 |
43 |
100 |
124 |
123 |
144 |
110 |
Psychologyb |
10,224 |
10,624 |
10,476 |
11,082 |
10,980 |
10,231 |
10,218 |
10,455 |
Clinical psychology |
2,201 |
2,232 |
2,227 |
2,064 |
2,136 |
2,025 |
1,897 |
1,841 |
Psychology, general |
3,374 |
3,536 |
3,438 |
3,635 |
3,300 |
3,024 |
3,115 |
3,240 |
Psychology nec |
4,649 |
4,856 |
4,811 |
5,383 |
5,544 |
5,182 |
5,206 |
5,374 |
Social sciences |
20,306 |
20,370 |
19,929 |
21,264 |
23,402 |
23,407 |
23,870 |
23,068 |
Agricultural economics |
543 |
516 |
491 |
573 |
610 |
510 |
528 |
498 |
Anthropology (cultural and social) |
1,314 |
1,305 |
1,310 |
1,444 |
1,452 |
1,454 |
1,407 |
1,459 |
Economics (except agricultural) |
2,907 |
3,108 |
3,179 |
3,263 |
3,855 |
3,926 |
4,045 |
4,022 |
Geography |
845 |
897 |
897 |
1,013 |
1,017 |
1,042 |
1,043 |
999 |
History and philosophy of science |
121 |
163 |
151 |
205 |
119 |
94 |
85 |
78 |
Linguistics |
577 |
580 |
535 |
557 |
632 |
645 |
680 |
709 |
Political science |
8,319 |
7,749 |
7,627 |
8,152 |
9,736 |
9,637 |
10,618 |
10,277 |
Sociology |
1,353 |
1,647 |
1,610 |
1,795 |
1,671 |
1,685 |
1,742 |
1,548 |
Sociology and anthropology |
151 |
136 |
120 |
93 |
90 |
44 |
41 |
49 |
Social sciences nec |
4,176 |
4,269 |
4,009 |
4,169 |
4,220 |
4,370 |
3,681 |
3,429 |
Engineering |
25,876 |
27,818 |
28,265 |
30,592 |
32,503 |
33,803 |
33,325 |
34,333 |
Aerospace engineering |
943 |
962 |
962 |
1,116 |
1,176 |
1,196 |
1,239 |
991 |
Agricultural engineering |
222 |
224 |
224 |
256 |
296 |
346 |
353 |
321 |
Architecturea |
na |
na |
1,533 |
1,979 |
2,273 |
2,263 |
970 |
630 |
Biomedical engineering |
1,472 |
1,559 |
1,565 |
1,648 |
1,833 |
2,011 |
2,141 |
2,261 |
Chemical engineering |
1,429 |
1,532 |
1,566 |
1,713 |
1,910 |
2,047 |
2,039 |
2,216 |
Civil engineeringa |
4,198 |
4,926 |
3,662 |
4,073 |
4,878 |
5,079 |
5,003 |
5,119 |
Electrical engineering |
8,668 |
8,887 |
8,920 |
9,042 |
8,831 |
9,237 |
9,790 |
10,439 |
Engineering science |
321 |
331 |
339 |
398 |
309 |
356 |
363 |
416 |
Industrial engineering |
2,148 |
2,445 |
2,626 |
3,015 |
2,908 |
2,783 |
2,837 |
2,767 |
Mechanical engineering |
3,734 |
3,941 |
3,937 |
4,297 |
4,814 |
5,055 |
4,832 |
5,344 |
Metallurgical and materials engineering |
1,043 |
1,089 |
1,086 |
1,170 |
1,302 |
1,431 |
1,561 |
1,609 |
Mining engineering |
50 |
58 |
33 |
48 |
45 |
54 |
94 |
65 |
Nuclear engineering |
206 |
239 |
237 |
259 |
265 |
330 |
280 |
267 |
Petroleum engineering |
174 |
220 |
220 |
261 |
306 |
265 |
323 |
371 |
Engineering nec |
1,268 |
1,405 |
1,355 |
1,317 |
1,357 |
1,350 |
1,500 |
1,517 |
Healthb |
22,069 |
22,031 |
21,459 |
21,816 |
19,001 |
17,995 |
16,475 |
15,911 |
Clinical medicine |
5,280 |
5,701 |
5,225 |
6,213 |
6,141 |
6,545 |
6,581 |
6,423 |
Anesthesiology |
358 |
189 |
189 |
209 |
124 |
106 |
0 |
0 |
Cardiology |
3 |
22 |
22 |
2 |
9 |
10 |
14 |
9 |
Endocrinology |
7 |
7 |
7 |
20 |
8 |
7 |
9 |
9 |
Gastroenterology |
0 |
0 |
0 |
3 |
1 |
2 |
1 |
0 |
Hematology |
1 |
3 |
3 |
5 |
1 |
0 |
1 |
2 |
Neurologya |
454 |
567 |
283 |
216 |
244 |
157 |
28 |
33 |
Obstetrics and gynecology |
9 |
30 |
30 |
28 |
29 |
27 |
30 |
30 |
Oncology and cancer research |
45 |
42 |
34 |
34 |
47 |
39 |
40 |
30 |
Ophthalmology |
92 |
83 |
80 |
0 |
0 |
1 |
0 |
0 |
Otorhinolaryngology |
0 |
2 |
2 |
0 |
0 |
2 |
0 |
0 |
Pediatrics |
110 |
88 |
88 |
62 |
49 |
54 |
34 |
21 |
Preventive medicine and community health |
3,355 |
3,784 |
3,839 |
4,771 |
4,898 |
5,311 |
5,638 |
5,867 |
Psychiatry |
32 |
12 |
12 |
30 |
38 |
44 |
38 |
40 |
Pulmonary disease |
0 |
1 |
1 |
3 |
0 |
0 |
1 |
4 |
Radiology |
60 |
70 |
74 |
74 |
87 |
99 |
79 |
93 |
Surgery |
11 |
5 |
4 |
4 |
6 |
21 |
11 |
6 |
Clinical medicine nec |
743 |
796 |
557 |
752 |
600 |
665 |
657 |
279 |
Other healthb |
16,789 |
16,330 |
16,234 |
15,603 |
12,860 |
11,450 |
9,894 |
9,488 |
Dental sciences |
402 |
364 |
389 |
410 |
475 |
421 |
487 |
496 |
Nursing |
3,944 |
3,953 |
3,950 |
3,584 |
2,315 |
1,386 |
902 |
814 |
Pharmaceutical sciences |
1,036 |
712 |
732 |
691 |
756 |
662 |
674 |
608 |
Speech pathology and audiology |
4,491 |
4,626 |
4,620 |
4,691 |
4,683 |
4,729 |
4,681 |
4,569 |
Veterinary sciences |
378 |
478 |
524 |
439 |
342 |
334 |
272 |
273 |
Other health nec |
6,538 |
6,197 |
6,019 |
5,788 |
4,289 |
3,918 |
2,878 |
2,728 |