Sectors Period Total 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 Total 1980 65,090 Total 1979 48,668 Total 1978 39,606 Total 1977 .. Total 1976 25,080 Total 1975 21,282 Total 1974 15,779 Total 1973 12,381 Total 1972 9,858 Total 1971 8,104 Total 1970 5,593 Total 1969 4,621 Total 1968 .. Total 1967 3,516 Total 1966 .. Total 1965 .. Total 1964 1,673 Public Administration: Total 1997 116,728 Public Administration: Total 1996 117,291 Public Administration: Total 1995 110,001 Public Administration: Total 1994 113,444 Public Administration: Total 1993 111,494 Public Administration: Total 1992 108,035 Public Administration: Total 1991 101,949 Public Administration: Total 1990 90,542 Public Administration: Total 1989 77,137 Public Administration: Total 1988 66,685 Public Administration: Total 1987 58,188 Public Administration: Total 1986 49,217 Public Administration: Total 1985 37,559 Public Administration: Total 1984 32,756 Public Administration: Total 1983 30,749 Public Administration: Total 1982 27,618 Public Administration: Total 1981 22,984 Public Administration: Total 1980 19,321 Public Administration: Total 1979 16,149 Public Administration: Total 1978 12,243 Public Administration: Total 1977 .. Public Administration: Total 1976 8,991 Public Administration: Total 1975 7,588 Public Administration: Total 1974 5,610 Public Administration: Total 1973 4,995 Public Administration: Total 1972 4,578 Public Administration: Total 1971 3,702 Public Administration: Total 1970 3,024 Public Administration: Total 1969 2,578 Public Administration: Total 1968 .. Public Administration: Total 1967 1,848 Public Administration: Total 1966 .. Public Administration: Total 1965 .. Public Administration: Total 1964 1,139 Public Administration: % 1997 17.4 Public Administration: % 1996 18.3 Public Administration: % 1995 18.6 Public Administration: % 1994 20.7 Public Administration: % 1993 20.0 Public Administration: % 1992 20.0 Public Administration: % 1991 21.3 Public Administration: % 1990 21.3 Public Administration: % 1989 22.7 Public Administration: % 1988 23.2 Public Administration: % 1987 25.2 Public Administration: % 1986 24.9 Public Administration: % 1985 24.2 Public Administration: % 1984 26.0 Public Administration: % 1983 28.6 Public Administration: % 1982 28.8 Public Administration: % 1981 31.6 Public Administration: % 1980 29.7 Public Administration: % 1979 33.2 Public Administration: % 1978 30.9 Public Administration: % 1977 .. Public Administration: % 1976 35.8 Public Administration: % 1975 35.7 Public Administration: % 1974 35.6 Public Administration: % 1973 40.3 Public Administration: % 1972 46.4 Public Administration: % 1971 45.7 Public Administration: % 1970 54.1 Public Administration: % 1969 55.8 Public Administration: % 1968 .. Public Administration: % 1967 52.6 Public Administration: % 1966 .. Public Administration: % 1965 .. Public Administration: % 1964 68.1 Higher education: Total 1997 219,951 Higher education: Total 1996 206,768 Higher education: Total 1995 189,166 Higher education: Total 1994 173,092 Higher education: Total 1993 174,342 Higher education: Total 1992 156,097 Higher education: Total 1991 106,507 Higher education: Total 1990 86,721 Higher education: Total 1989 69,270 Higher education: Total 1988 55,366 Higher education: Total 1987 43,667 Higher education: Total 1986 36,778 Higher education: Total 1985 31,987 Higher education: Total 1984 28,032 Higher education: Total 1983 24,772 Higher education: Total 1982 21,522 Higher education: Total 1981 16,708 Higher education: Total 1980 13,640 Higher education: Total 1979 8,211 Higher education: Total 1978 6,464 Higher education: Total 1977 .. Higher education: Total 1976 1,551 Higher education: Total 1975 1,518 Higher education: Total 1974 826 Higher education: Total 1973 771 Higher education: Total 1972 739 Higher education: Total 1971 854 Higher education: Total 1970 200 Higher education: Total 1969 162 Higher education: Total 1968 .. Higher education: Total 1967 107 Higher education: Total 1966 .. Higher education: Total 1965 .. Higher education: Total 1964 108 Higher education: % 1997 32.7 Higher education: % 1996 32.3 Higher education: % 1995 32.0 Higher education: % 1994 31.6 Higher education: % 1993 31.3 Higher education: % 1992 28.9 Higher education: % 1991 22.2 Higher education: % 1990 20.4 Higher education: % 1989 20.4 Higher education: % 1988 19.2 Higher education: % 1987 19.0 Higher education: % 1986 18.6 Higher education: % 1985 20.6 Higher education: % 1984 22.2 Higher education: % 1983 23.0 Higher education: % 1982 22.4 Higher education: % 1981 22.9 Higher education: % 1980 20.9 Higher education: % 1979 16.9 Higher education: % 1978 16.3 Higher education: % 1977 .. Higher education: % 1976 6.2 Higher education: % 1975 7.1 Higher education: % 1974 5.2 Higher education: % 1973 6.2 Higher education: % 1972 7.5 Higher education: % 1971 10.5 Higher education: % 1970 3.6 Higher education: % 1969 3.5 Higher education: % 1968 .. Higher education: % 1967 3.0 Higher education: % 1966 .. Higher education: % 1965 .. Higher education: % 1964 6.4 Companies: Total 1997 327,922 Companies: Total 1996 309,914 Companies: Total 1995 284,891 Companies: Total 1994 256,316 Companies: Total 1993 266,175 Companies: Total 1992 272,709 Companies: Total 1991 268,434 Companies: Total 1990 246,239 Companies: Total 1989 191,153 Companies: Total 1988 163,370 Companies: Total 1987 126,707 Companies: Total 1986 110,338 Companies: Total 1985 85,795 Companies: Total 1984 65,411 Companies: Total 1983 52,143 Companies: Total 1982 46,862 Companies: Total 1981 33,121 Companies: Total 1980 32,129 Companies: Total 1979 24,308 Companies: Total 1978 20,899 Companies: Total 1977 .. Companies: Total 1976 14,420 Companies: Total 1975 12,176 Companies: Total 1974 9,101 Companies: Total 1973 6,463 Companies: Total 1972 4,540 Companies: Total 1971 3,548 Companies: Total 1970 2,369 Companies: Total 1969 1,881 Companies: Total 1968 .. Companies: Total 1967 1,561 Companies: Total 1966 .. Companies: Total 1965 .. Companies: Total 1964 426 Companies: % 1997 48.8 Companies: % 1996 48.3 Companies: % 1995 48.3 Companies: % 1994 46.8 Companies: % 1993 47.7 Companies: % 1992 50.5 Companies: % 1991 56.0 Companies: % 1990 57.8 Companies: % 1989 56.3 Companies: % 1988 56.8 Companies: % 1987 55.0 Companies: % 1986 55.8 Companies: % 1985 55.2 Companies: % 1984 51.8 Companies: % 1983 48.4 Companies: % 1982 48.8 Companies: % 1981 45.5 Companies: % 1980 49.9 Companies: % 1979 49.9 Companies: % 1978 52.8 Companies: % 1977 .. Companies: % 1976 57.5 Companies: % 1975 57.2 Companies: % 1974 57.7 Companies: % 1973 52.2 Companies: % 1972 46.1 Companies: % 1971 43.8 Companies: % 1970 42.4 Companies: % 1969 40.7 Companies: % 1968 .. Companies: % 1967 44.4 Companies: % 1966 .. Companies: % 1965 .. Companies: % 1964 25.5 PNPI: Total 1997 7,416 PNPI: Total 1996 7,051 PNPI: Total 1995 6,630 PNPI: Total 1994 5,302 PNPI: Total 1993 5,392 PNPI: Total 1992 3,078 PNPI: Total 1991 2,482 PNPI: Total 1990 2,327 PNPI: Total 1989 1,764 PNPI: Total 1988 2,268 PNPI: Total 1987 1,947 PNPI: Total 1986 1,343 PNPI: Total 1985 .. PNPI: Total 1984 .. PNPI: Total 1983 .. PNPI: Total 1982 .. PNPI: Total 1981 .. PNPI: Total 1980 .. PNPI: Total 1979 .. PNPI: Total 1978 .. PNPI: Total 1977 .. PNPI: Total 1976 118 PNPI: Total 1975 .. PNPI: Total 1974 242 PNPI: Total 1973 152 PNPI: Total 1972 .. PNPI: Total 1971 .. PNPI: Total 1970 .. PNPI: Total 1969 .. PNPI: Total 1968 .. PNPI: Total 1967 .. PNPI: Total 1966 .. PNPI: Total 1965 .. PNPI: Total 1964 .. PNPI: % 1997 1.1 PNPI: % 1996 1.1 PNPI: % 1995 1.1 PNPI: % 1994 1.0 PNPI: % 1993 1.0 PNPI: % 1992 0.6 PNPI: % 1991 0.5 PNPI: % 1990 0.5 PNPI: % 1989 0.5 PNPI: % 1988 0.8 PNPI: % 1987 0.8 PNPI: % 1986 0.7 PNPI: % 1985 .. PNPI: % 1984 .. PNPI: % 1983 .. PNPI: % 1982 .. PNPI: % 1981 .. PNPI: % 1980 .. PNPI: % 1979 .. PNPI: % 1978 .. PNPI: % 1977 .. PNPI: % 1976 0.5 PNPI: % 1975 .. PNPI: % 1974 1.5 PNPI: % 1973 1.2 PNPI: % 1972 .. PNPI: % 1971 .. PNPI: % 1970 .. PNPI: % 1969 .. PNPI: % 1968 .. PNPI: % 1967 .. PNPI: % 1966 .. PNPI: % 1965 .. PNPI: % 1964 .. Volume indices: Total 1997 193 Volume indices: Total 1996 188 Volume indices: Total 1995 178 Volume indices: Total 1994 174 Volume indices: Total 1993 184 Volume indices: Total 1992 186 Volume indices: Total 1991 176 Volume indices: Total 1990 168 Volume indices: Total 1989 144 Volume indices: Total 1988 130 Volume indices: Total 1987 110 Volume indices: Total 1986 100 Volume indices: Total 1985 87 Volume indices: Total 1984 76 Volume indices: Total 1983 73 Volume indices: Total 1982 72 Volume indices: Total 1981 63 Volume indices: Total 1980 63 Volume indices: Total 1979 54 Volume indices: Total 1978 51 Volume indices: Total 1977 .. Volume indices: Total 1976 48 Volume indices: Total 1975 47 Volume indices: Total 1974 41 Volume indices: Total 1973 37 Volume indices: Total 1972 33 Volume indices: Total 1971 29 Volume indices: Total 1970 22 Volume indices: Total 1969 19 Volume indices: Total 1968 .. Volume indices: Total 1967 16 Volume indices: Total 1966 .. Volume indices: Total 1965 .. Volume indices: Total 1964 10 Volume indices: Public administration 1997 135 Volume indices: Public administration 1996 138 Volume indices: Public administration 1995 133 Volume indices: Public administration 1994 144 Volume indices: Public administration 1993 148 Volume indices: Public administration 1992 149 Volume indices: Public administration 1991 151 Volume indices: Public administration 1990 143 Volume indices: Public administration 1989 131 Volume indices: Public administration 1988 121 Volume indices: Public administration 1987 112 Volume indices: Public administration 1986 100 Volume indices: Public administration 1985 85 Volume indices: Public administration 1984 80 Volume indices: Public administration 1983 83 Volume indices: Public administration 1982 84 Volume indices: Public administration 1981 79 Volume indices: Public administration 1980 75 Volume indices: Public administration 1979 71 Volume indices: Public administration 1978 63 Volume indices: Public administration 1977 .. Volume indices: Public administration 1976 69 Volume indices: Public administration 1975 68 Volume indices: Public administration 1974 59 Volume indices: Public administration 1973 60 Volume indices: Public administration 1972 62 Volume indices: Public administration 1971 54 Volume indices: Public administration 1970 48 Volume indices: Public administration 1969 43 Volume indices: Public administration 1968 .. Volume indices: Public administration 1967 37 Volume indices: Public administration 1966 .. Volume indices: Public administration 1965 .. Volume indices: Public administration 1964 28 Volume indices: Higher education 1997 340 Volume indices: Higher education 1996 326 Volume indices: Higher education 1995 307 Volume indices: Higher education 1994 295 Volume indices: Higher education 1993 309 Volume indices: Higher education 1992 289 Volume indices: Higher education 1991 210 Volume indices: Higher education 1990 183 Volume indices: Higher education 1989 157 Volume indices: Higher education 1988 135 Volume indices: Higher education 1987 112 Volume indices: Higher education 1986 100 Volume indices: Higher education 1985 97 Volume indices: Higher education 1984 91 Volume indices: Higher education 1983 90 Volume indices: Higher education 1982 87 Volume indices: Higher education 1981 77 Volume indices: Higher education 1980 71 Volume indices: Higher education 1979 49 Volume indices: Higher education 1978 45 Volume indices: Higher education 1977 .. Volume indices: Higher education 1976 16 Volume indices: Higher education 1975 18 Volume indices: Higher education 1974 12 Volume indices: Higher education 1973 12 Volume indices: Higher education 1972 13 Volume indices: Higher education 1971 17 Volume indices: Higher education 1970 4 Volume indices: Higher education 1969 4 Volume indices: Higher education 1968 .. Volume indices: Higher education 1967 3 Volume indices: Higher education 1966 .. Volume indices: Higher education 1965 .. Volume indices: Higher education 1964 3 Volume indices: Companies 1997 169 Volume indices: Companies 1996 163 Volume indices: Companies 1995 154 Volume indices: Companies 1994 146 Volume indices: Companies 1993 157 Volume indices: Companies 1992 168 Volume indices: Companies 1991 177 Volume indices: Companies 1990 174 Volume indices: Companies 1989 145 Volume indices: Companies 1988 132 Volume indices: Companies 1987 108 Volume indices: Companies 1986 100 Volume indices: Companies 1985 86 Volume indices: Companies 1984 71 Volume indices: Companies 1983 63 Volume indices: Companies 1982 63 Volume indices: Companies 1981 51 Volume indices: Companies 1980 56 Volume indices: Companies 1979 48 Volume indices: Companies 1978 48 Volume indices: Companies 1977 .. Volume indices: Companies 1976 49 Volume indices: Companies 1975 49 Volume indices: Companies 1974 43 Volume indices: Companies 1973 35 Volume indices: Companies 1972 27 Volume indices: Companies 1971 23 Volume indices: Companies 1970 17 Volume indices: Companies 1969 14 Volume indices: Companies 1968 .. Volume indices: Companies 1967 12 Volume indices: Companies 1966 .. Volume indices: Companies 1965 .. Volume indices: Companies 1964 5 Volume indices: PNPI 1997 314 Volume indices: PNPI 1996 304 Volume indices: PNPI 1995 295 Volume indices: PNPI 1994 247 Volume indices: PNPI 1993 262 Volume indices: PNPI 1992 156 Volume indices: PNPI 1991 134 Volume indices: PNPI 1990 135 Volume indices: PNPI 1989 110 Volume indices: PNPI 1988 151 Volume indices: PNPI 1987 137 Volume indices: PNPI 1986 100 Volume indices: PNPI 1985 .. Volume indices: PNPI 1984 .. Volume indices: PNPI 1983 .. Volume indices: PNPI 1982 .. Volume indices: PNPI 1981 .. Volume indices: PNPI 1980 .. Volume indices: PNPI 1979 .. Volume indices: PNPI 1978 .. Volume indices: PNPI 1977 .. Volume indices: PNPI 1976 33 Volume indices: PNPI 1975 .. Volume indices: PNPI 1974 93 Volume indices: PNPI 1973 67 Volume indices: PNPI 1972 .. Volume indices: PNPI 1971 .. Volume indices: PNPI 1970 .. Volume indices: PNPI 1969 .. Volume indices: PNPI 1968 .. Volume indices: PNPI 1967 .. Volume indices: PNPI 1966 .. Volume indices: PNPI 1965 .. Volume indices: PNPI 1964 7