Year	% female
1971	48.121021270752
1973	46.8847312927246
1974	46.7525482177734
1975	46.5458297729492
1976	46.2337989807129
1977	46.0743408203125
1978	45.6777610778809
1979	45.3927116394043
1980	45.2355308532715
1981	45.1438102722168
1984	48.2224617004395
1985	48.095890045166
1986	47.2986183166504
1987	48.0221786499023
1988	48.321720123291
1989	48.8013305664062
1990	50.0909996032715
1991	50.4150695800781
1992	50.6291389465332