Year	% female
1971	30.12798
1972	39.73431
1973	43.82074
1976	35.19233
1978	32.52745
1979	31.47041
1980	31.3679
1981	31.59286
1982	31.72734
1983	32.77344
1984	33.55339
1985	34.01951
1987	35.28518
1988	35.19212
1989	35.79553
1992	35.65008
1993	35.82545
1994	36.25567
1995	36.81814
1996	36.81374
1997	36.78791
1998	36.78833
2000	40.32298
2010	48.33985