Year	% female
1970	48.74706
1971	48.70197
1972	48.4976
1973	48.6498
1974	48.76884
1975	48.62519
1976	48.5886
1977	48.7607
1978	48.69404
1979	48.76166
1980	48.87814
1981	48.83291
1982	48.81796
1983	48.74499
1984	48.74646
1985	48.85526
1986	48.88136
1987	48.87724
1988	48.99995
1989	48.95727
1990	49.01422
1991	48.79202
1992	48.78785
1993	48.66774
1994	48.53416
1995	48.49332
1996	48.43936
1997	48.41112
1998	48.34458
1999	48.39519
2000	48.39908
2001	48.44526
2002	48.44761
2003	48.44101
2004	48.40134
2005	48.34564
2006	48.30359
2007	48.29389
2008	48.29207
2009	48.26666
2010	48.26098
2011	48.28173
2012	48.32048
2013	48.41183
2014	48.42877
2015	48.45561
2016	48.49141
2017	48.5035
2018	48.50424