Field or discipline	Period	Total
Total	1999	831,158
Total	1998	784,513
Total	1997	672,017
Total	1996	641,024
Total	1995	590,688
Total	1994	548,154
Total	1993	557,403
Total	1992	539,919
Total	1991	479,372
Total	1990	425,829
Total	1989	339,324
Total	1988	287,689
Total	1987	230,509
Total	1986	197,676
Total	1985	155,341
Total	1984	126,199
Total	1983	107,664
Total	1982	96,002
Total	1981	72,813
Exact and natural sciences: Total	1999	154,256
Exact and natural sciences: Total	1998	145,438
Exact and natural sciences: Total	1997	134,994
Exact and natural sciences: Total	1996	133,075
Exact and natural sciences: Total	1995	116,745
Exact and natural sciences: Total	1994	102,505
Exact and natural sciences: Total	1993	74,991
Exact and natural sciences: Total	1992	71,290
Exact and natural sciences: Total	1991	51,330
Exact and natural sciences: Total	1990	45,132
Exact and natural sciences: Total	1989	37,734
Exact and natural sciences: Total	1988	28,524
Exact and natural sciences: Total	1987	27,142
Exact and natural sciences: Total	1986	22,988
Exact and natural sciences: Total	1985	18,000
Exact and natural sciences: Total	1984	14,239
Exact and natural sciences: Total	1983	13,085
Exact and natural sciences: Total	1982	10,749
Exact and natural sciences: Total	1981	8,139
Exact and natural sciences: %	1999	18.5
Exact and natural sciences: %	1998	18.5
Exact and natural sciences: %	1997	20.1
Exact and natural sciences: %	1996	20.8
Exact and natural sciences: %	1995	19.8
Exact and natural sciences: %	1994	18.7
Exact and natural sciences: %	1993	13.5
Exact and natural sciences: %	1992	13.2
Exact and natural sciences: %	1991	10.7
Exact and natural sciences: %	1990	10.6
Exact and natural sciences: %	1989	11.1
Exact and natural sciences: %	1988	9.9
Exact and natural sciences: %	1987	11.8
Exact and natural sciences: %	1986	11.6
Exact and natural sciences: %	1985	11.6
Exact and natural sciences: %	1984	11.3
Exact and natural sciences: %	1983	12.1
Exact and natural sciences: %	1982	11.2
Exact and natural sciences: %	1981	11.2
Engineering and technology: Total	1999	439,311
Engineering and technology: Total	1998	411,496
Engineering and technology: Total	1997	338,098
Engineering and technology: Total	1996	322,468
Engineering and technology: Total	1995	302,542
Engineering and technology: Total	1994	285,932
Engineering and technology: Total	1993	301,377
Engineering and technology: Total	1992	306,141
Engineering and technology: Total	1991	288,192
Engineering and technology: Total	1990	262,330
Engineering and technology: Total	1989	205,326
Engineering and technology: Total	1988	177,523
Engineering and technology: Total	1987	135,936
Engineering and technology: Total	1986	121,224
Engineering and technology: Total	1985	94,856
Engineering and technology: Total	1984	69,463
Engineering and technology: Total	1983	63,084
Engineering and technology: Total	1982	56,738
Engineering and technology: Total	1981	41,410
Engineering and technology: %	1999	52.9
Engineering and technology: %	1998	52.5
Engineering and technology: %	1997	50.3
Engineering and technology: %	1996	50.3
Engineering and technology: %	1995	51.2
Engineering and technology: %	1994	52.2
Engineering and technology: %	1993	54.1
Engineering and technology: %	1992	56.7
Engineering and technology: %	1991	60.1
Engineering and technology: %	1990	61.6
Engineering and technology: %	1989	60.5
Engineering and technology: %	1988	61.7
Engineering and technology: %	1987	59.0
Engineering and technology: %	1986	61.3
Engineering and technology: %	1985	61.0
Engineering and technology: %	1984	55.0
Engineering and technology: %	1983	58.6
Engineering and technology: %	1982	59.1
Engineering and technology: %	1981	56.9
Medical sciences: Total	1999	111,330
Medical sciences: Total	1998	108,769
Medical sciences: Total	1997	92,398
Medical sciences: Total	1996	84,288
Medical sciences: Total	1995	81,319
Medical sciences: Total	1994	71,050
Medical sciences: Total	1993	74,850
Medical sciences: Total	1992	70,196
Medical sciences: Total	1991	62,184
Medical sciences: Total	1990	51,618
Medical sciences: Total	1989	40,154
Medical sciences: Total	1988	34,408
Medical sciences: Total	1987	28,221
Medical sciences: Total	1986	20,296
Medical sciences: Total	1985	15,395
Medical sciences: Total	1984	18,634
Medical sciences: Total	1983	12,228
Medical sciences: Total	1982	11,853
Medical sciences: Total	1981	9,043
Medical sciences: %	1999	13.4
Medical sciences: %	1998	13.9
Medical sciences: %	1997	13.7
Medical sciences: %	1996	13.1
Medical sciences: %	1995	13.8
Medical sciences: %	1994	13.0
Medical sciences: %	1993	13.4
Medical sciences: %	1992	13.0
Medical sciences: %	1991	13.0
Medical sciences: %	1990	12.1
Medical sciences: %	1989	11.8
Medical sciences: %	1988	12.0
Medical sciences: %	1987	12.2
Medical sciences: %	1986	10.3
Medical sciences: %	1985	9.9
Medical sciences: %	1984	14.8
Medical sciences: %	1983	11.4
Medical sciences: %	1982	12.4
Medical sciences: %	1981	12.4
Agricultural Sciences: Total	1999	59,970
Agricultural Sciences: Total	1998	56,088
Agricultural Sciences: Total	1997	49,456
Agricultural Sciences: Total	1996	47,557
Agricultural Sciences: Total	1995	39,943
Agricultural Sciences: Total	1994	37,513
Agricultural Sciences: Total	1993	38,039
Agricultural Sciences: Total	1992	36,576
Agricultural Sciences: Total	1991	36,882
Agricultural Sciences: Total	1990	33,617
Agricultural Sciences: Total	1989	28,895
Agricultural Sciences: Total	1988	26,669
Agricultural Sciences: Total	1987	23,352
Agricultural Sciences: Total	1986	18,683
Agricultural Sciences: Total	1985	15,318
Agricultural Sciences: Total	1984	13,180
Agricultural Sciences: Total	1983	9,935
Agricultural Sciences: Total	1982	8,910
Agricultural Sciences: Total	1981	7,218
Agricultural Sciences: %	1999	7.2
Agricultural Sciences: %	1998	7.1
Agricultural Sciences: %	1997	7.4
Agricultural Sciences: %	1996	7.4
Agricultural Sciences: %	1995	6.8
Agricultural Sciences: %	1994	6.8
Agricultural Sciences: %	1993	6.8
Agricultural Sciences: %	1992	6.8
Agricultural Sciences: %	1991	7.7
Agricultural Sciences: %	1990	7.9
Agricultural Sciences: %	1989	8.5
Agricultural Sciences: %	1988	9.3
Agricultural Sciences: %	1987	10.1
Agricultural Sciences: %	1986	9.5
Agricultural Sciences: %	1985	9.9
Agricultural Sciences: %	1984	10.4
Agricultural Sciences: %	1983	9.2
Agricultural Sciences: %	1982	9.3
Agricultural Sciences: %	1981	9.9
Social sciences and humanities: Total	1999	66,255
Social sciences and humanities: Total	1998	62,722
Social sciences and humanities: Total	1997	57,071
Social sciences and humanities: Total	1996	53,636
Social sciences and humanities: Total	1995	50,139
Social sciences and humanities: Total	1994	51,154
Social sciences and humanities: Total	1993	68,146
Social sciences and humanities: Total	1992	55,716
Social sciences and humanities: Total	1991	40,784
Social sciences and humanities: Total	1990	33,132
Social sciences and humanities: Total	1989	27,215
Social sciences and humanities: Total	1988	20,565
Social sciences and humanities: Total	1987	15,858
Social sciences and humanities: Total	1986	14,485
Social sciences and humanities: Total	1985	11,772
Social sciences and humanities: Total	1984	10,683
Social sciences and humanities: Total	1983	9,332
Social sciences and humanities: Total	1982	7,752
Social sciences and humanities: Total	1981	7,003
Social sciences and humanities: %	1999	8.0
Social sciences and humanities: %	1998	8.0
Social sciences and humanities: %	1997	8.5
Social sciences and humanities: %	1996	8.4
Social sciences and humanities: %	1995	8.5
Social sciences and humanities: %	1994	9.3
Social sciences and humanities: %	1993	12.2
Social sciences and humanities: %	1992	10.3
Social sciences and humanities: %	1991	8.5
Social sciences and humanities: %	1990	7.8
Social sciences and humanities: %	1989	8.0
Social sciences and humanities: %	1988	7.1
Social sciences and humanities: %	1987	6.9
Social sciences and humanities: %	1986	7.3
Social sciences and humanities: %	1985	7.6
Social sciences and humanities: %	1984	8.5
Social sciences and humanities: %	1983	8.7
Social sciences and humanities: %	1982	8.0
Social sciences and humanities: %	1981	9.6