Year	% female
1971	23.4495
1972	20.65099
1973	28.4511
1974	39.82752
1975	46.21934
1976	47.81557
1977	50.75068
1978	52.10388
1979	51.12282
1980	50.29471
1981	48.42078
1983	45.54922
1986	46.99015
2002	53.07673
2003	53.03338