Year	% female
1971	11.4754104614258
1972	10.3999996185303
1973	16.4948501586914
1974	23.3082695007324
1975	18.7122707366943
1976	27.5167808532715
1977	24.6002502441406
1978	28.4313697814941
1979	28.0034599304199
1980	25.1273307800293
1981	23.4578609466553
1982	22.7521495819092
1983	20.8118095397949
1984	22.0372791290283
1985	24.6414604187012
1988	18.2093200683594
1990	16.8621692657471
1992	21.62619972229
1994	19.2368793487549
1999	20.5711307525635
2004	27.3441104888916