Field or discipline	Period	Total
Total	1999	4,995
Total	1998	4,715
Total	1997	4,039
Total	1996	3,853
Total	1995	3,550
Total	1994	3,294
Total	1993	3,350
Total	1992	3,245
Total	1991	2,881
Total	1990	2,559
Total	1989	2,039
Total	1988	1,729
Total	1987	1,385
Total	1986	1,188
Total	1985	934
Total	1984	758
Total	1983	647
Total	1982	577
Total	1981	438
Exact and natural sciences: Total	1999	927
Exact and natural sciences: Total	1998	874
Exact and natural sciences: Total	1997	811
Exact and natural sciences: Total	1996	800
Exact and natural sciences: Total	1995	702
Exact and natural sciences: Total	1994	616
Exact and natural sciences: Total	1993	451
Exact and natural sciences: Total	1992	428
Exact and natural sciences: Total	1991	308
Exact and natural sciences: Total	1990	271
Exact and natural sciences: Total	1989	227
Exact and natural sciences: Total	1988	171
Exact and natural sciences: Total	1987	163
Exact and natural sciences: Total	1986	138
Exact and natural sciences: Total	1985	108
Exact and natural sciences: Total	1984	86
Exact and natural sciences: Total	1983	79
Exact and natural sciences: Total	1982	65
Exact and natural sciences: Total	1981	49
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	2,640
Engineering and technology: Total	1998	2,473
Engineering and technology: Total	1997	2,032
Engineering and technology: Total	1996	1,938
Engineering and technology: Total	1995	1,818
Engineering and technology: Total	1994	1,718
Engineering and technology: Total	1993	1,811
Engineering and technology: Total	1992	1,840
Engineering and technology: Total	1991	1,732
Engineering and technology: Total	1990	1,577
Engineering and technology: Total	1989	1,234
Engineering and technology: Total	1988	1,067
Engineering and technology: Total	1987	817
Engineering and technology: Total	1986	729
Engineering and technology: Total	1985	570
Engineering and technology: Total	1984	417
Engineering and technology: Total	1983	379
Engineering and technology: Total	1982	341
Engineering and technology: Total	1981	249
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	669
Medical sciences: Total	1998	654
Medical sciences: Total	1997	555
Medical sciences: Total	1996	507
Medical sciences: Total	1995	489
Medical sciences: Total	1994	427
Medical sciences: Total	1993	450
Medical sciences: Total	1992	422
Medical sciences: Total	1991	374
Medical sciences: Total	1990	310
Medical sciences: Total	1989	241
Medical sciences: Total	1988	207
Medical sciences: Total	1987	170
Medical sciences: Total	1986	122
Medical sciences: Total	1985	93
Medical sciences: Total	1984	112
Medical sciences: Total	1983	73
Medical sciences: Total	1982	71
Medical sciences: Total	1981	54
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	360
Agricultural Sciences: Total	1998	337
Agricultural Sciences: Total	1997	297
Agricultural Sciences: Total	1996	286
Agricultural Sciences: Total	1995	240
Agricultural Sciences: Total	1994	225
Agricultural Sciences: Total	1993	229
Agricultural Sciences: Total	1992	220
Agricultural Sciences: Total	1991	222
Agricultural Sciences: Total	1990	202
Agricultural Sciences: Total	1989	174
Agricultural Sciences: Total	1988	160
Agricultural Sciences: Total	1987	140
Agricultural Sciences: Total	1986	112
Agricultural Sciences: Total	1985	92
Agricultural Sciences: Total	1984	79
Agricultural Sciences: Total	1983	60
Agricultural Sciences: Total	1982	54
Agricultural Sciences: Total	1981	43
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	398
Social sciences and humanities: Total	1998	377
Social sciences and humanities: Total	1997	343
Social sciences and humanities: Total	1996	322
Social sciences and humanities: Total	1995	301
Social sciences and humanities: Total	1994	307
Social sciences and humanities: Total	1993	410
Social sciences and humanities: Total	1992	335
Social sciences and humanities: Total	1991	245
Social sciences and humanities: Total	1990	199
Social sciences and humanities: Total	1989	164
Social sciences and humanities: Total	1988	124
Social sciences and humanities: Total	1987	95
Social sciences and humanities: Total	1986	87
Social sciences and humanities: Total	1985	71
Social sciences and humanities: Total	1984	64
Social sciences and humanities: Total	1983	56
Social sciences and humanities: Total	1982	47
Social sciences and humanities: Total	1981	42
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