Year	% female
1971	25.38095
1972	25.08741
1973	31.20757
1974	34.40562
1975	32.57248
1976	35.03086
1977	38.4561
1978	39.55692
1979	38.58248
1980	40.55431
1981	37.7101
1982	41.60178
1983	38.4524
1984	38.22832
1985	39.76497
1986	37.76934
1987	38.08979
1988	38.98895
1989	41.90469
1990	41.53319
1991	34.88028
1992	38.33085
1993	42.05958
2003	43.6062
2004	48.6801
2005	48.68576
2006	48.98422
2007	44.26762
2009	37.56161
2010	36.02974
2011	39.06498
2012	33.07064
2013	39.65735
2014	43.2804
2015	46.96151
2016	47.19072
2017	47.04068
2018	47.70961