Year	% female
1975	45.15695
1976	44.74235
1977	44.67425
1978	45.08676
1979	45.58879
1980	45.45923
1981	45.00986
1982	45.14202
1983	45.49017
1984	45.59999
1985	45.04245
1986	45.60094
1987	45.9802
1988	46.03354
1989	46.23799
1990	46.31902
1991	46.53628
1992	46.85154
1993	46.98993
1994	47.57184
1995	47.79573
1996	47.91814
1997	47.91885
1998	48.12278
1999	48.26239
2000	48.31811
2001	48.31474
2002	48.30183
2003	48.2694
2004	48.43125
2005	48.57362
2006	48.65189
2007	48.64513
2008	48.70802
2009	48.79058
2010	48.2699
2011	48.25509
2012	48.26506
2013	48.32495
2014	48.3204
2015	48.18399
2016	48.06615
2017	47.93876
2018	47.88807