Year	% female
1970	42.93898
1971	42.96885
1972	43.05983
1973	43.26788
1974	43.16683
1975	43.78674
1976	44.03711
1977	44.24996
1978	44.49782
1979	44.39323
1980	45.17492
1981	46.90554
1982	45.25159
1983	45.85506
1984	45.87588
1985	46.04632
1986	46.44275
1987	46.67806
1988	46.58286
1989	46.14589
1990	45.88069
1991	45.95998
1992	46.1753
1993	46.03955
1994	45.56084
1995	45.63056
1996	45.80851
1997	45.76925
1998	44.85877
1999	44.9134
2000	45.17165
2001	45.1774
2002	45.11125
2003	44.96571
2004	44.15404
2005	43.93198
2006	43.37357
2007	43.30049
2008	43.07249
2009	42.54751
2010	42.60508
2011	42.41742
2012	42.29199
2013	43.46661
2014	43.2228
2015	42.93871
2016	42.97685
2017	43.0535
2018	43.07556