Occupation;years;Total
Total;2001;46,465
Total;2000;47,055
Total;1999;38,323
Total;1998;34,667
Total;1997;30,023
Total;1996;29,431
Total;1995;27,557
Total;1994;27,321
Total;1993;27,781
Total;1992;28,590
Total;1991;29,151
Total;1990;28,508
Total;1989;25,865
Total;1988;23,678
Total;1987;20,361
Total;1986;19,007
Total;1985;16,860
Total;1984;15,022
Total;1983;12,905
Total;1982;12,914
Total;1981;12,006
Total;1980;12,303
Total;1979;11,911
Total;1978;11,591
Total;1977;..
Total;1976;14,175
Total;1975;13,199
Total;1974;11,311
Total;1973;9,937
Total;1972;8,686
Total;1971;7,623
Total;1970;5,691
Total;1969;4,777
Researchers;2001;18,959
Researchers;2000;20,869
Researchers;1999;15,178
Researchers;1998;13,902
Researchers;1997;12,009
Researchers;1996;11,100
Researchers;1995;10,803
Researchers;1994;11,070
Researchers;1993;11,256
Researchers;1992;11,593
Researchers;1991;11,622
Researchers;1990;11,007
Researchers;1989;9,394
Researchers;1988;8,552
Researchers;1987;6,835
Researchers;1986;6,160
Researchers;1985;4,853
Researchers;1984;4,019
Researchers;1983;3,528
Researchers;1982;3,409
Researchers;1981;3,226
Researchers;1980;2,994
Researchers;1979;2,950
Researchers;1978;2,800
Researchers;1977;..
Researchers;1976;3,002
Researchers;1975;2,760
Researchers;1974;2,683
Researchers;1973;2,340
Researchers;1972;1,981
Researchers;1971;1,681
Researchers;1970;1,426
Researchers;1969;1,164
Technicians;2001;18,738
Technicians;2000;17,039
Technicians;1999;15,103
Technicians;1998;12,516
Technicians;1997;11,178
Technicians;1996;10,932
Technicians;1995;9,992
Technicians;1994;9,133
Technicians;1993;9,287
Technicians;1992;9,440
Technicians;1991;9,510
Technicians;1990;9,137
Technicians;1989;8,601
Technicians;1988;7,608
Technicians;1987;6,559
Technicians;1986;6,222
Technicians;1985;5,556
Technicians;1984;4,627
Technicians;1983;3,884
Technicians;1982;4,049
Technicians;1981;3,727
Technicians;1980;3,549
Technicians;1979;2,978
Technicians;1978;2,864
Technicians;1977;..
Technicians;1976;3,762
Technicians;1975;..
Technicians;1974;3,059
Technicians;1973;2,627
Technicians;1972;1,472
Technicians;1971;1,240
Technicians;1970;943
Technicians;1969;791
Assistants;2001;8,768
Assistants;2000;9,147
Assistants;1999;8,042
Assistants;1998;8,249
Assistants;1997;6,836
Assistants;1996;7,400
Assistants;1995;6,763
Assistants;1994;7,118
Assistants;1993;7,238
Assistants;1992;7,557
Assistants;1991;8,019
Assistants;1990;8,364
Assistants;1989;7,870
Assistants;1988;7,518
Assistants;1987;6,967
Assistants;1986;6,625
Assistants;1985;6,451
Assistants;1984;6,376
Assistants;1983;5,494
Assistants;1982;5,456
Assistants;1981;5,053
Assistants;1980;5,760
Assistants;1979;5,983
Assistants;1978;5,927
Assistants;1977;..
Assistants;1976;7,411
Assistants;1975;..
Assistants;1974;5,569
Assistants;1973;4,970
Assistants;1972;5,233
Assistants;1971;4,702
Assistants;1970;3,322
Assistants;1969;2,822