Year	% female
1970	38.14033
1971	38.27856
1972	38.64717
1973	39.34227
1974	39.35267
1975	39.34031
1976	39.26997
1977	39.36588
1978	39.61836
1979	40.25899
1980	39.46611
1981	39.57414
1982	39.39887
1983	37.25831
1984	36.19853
1985	38.44903
1986	40.9839
1987	41.39948
1988	41.36865
1989	41.21317
1990	41.20706
1991	41.58784
1992	41.69065
1993	42.07884
1994	42.48702
1995	42.93955
1996	43.40629
1997	43.86797
1998	44.17046
1999	44.70214
2000	44.4938
2001	44.68661
2002	44.16169
2003	45.04231
2004	44.98088
2005	45.4761
2006	45.32813
2007	44.57269
2008	45.20443
2009	45.81399
2010	45.5318
2011	45.01903
2012	45.2657
2013	45.22809
2014	45.48369
2015	45.69212
2016	45.70108
2017	45.75822
2018	46.20324