Year	% female
1972	15
1973	14.3999996185303
1974	14.3999996185303
1975	14.3999996185303
1977	14.3999996185303
1978	14.7286796569824
1979	14.7286796569824
1980	14.7286796569824
1984	27.5862102508545
1985	33.5570487976074
1986	35.9605903625488
1987	36.4035110473633
1988	39.8268394470215
1989	39.908260345459
1990	39.1891899108887
1991	39.130428314209
1992	38.7218017578125