Year	% female
1970	50.1843
1971	50.24625
1972	50.24816
1973	50.69586
1974	50.88363
1975	51.48554
1976	50.21106
1977	50.53495
1978	50.24202
1979	49.53899
1980	49.24707
1981	48.78447
1982	48.81277
1983	49.0835
1984	49.52639
1985	49.55569
1986	49.2441
1987	49.71217
1988	49.6937
1989	48.92555
1991	49.02309
1992	48.696
1993	48.58706
1994	49.19786
1995	49.30703
1996	49.44366
1997	49.11255
1998	49.19901
1999	49.32031
2000	49.31671
2001	49.00838
2002	48.83093
2003	48.64409
2004	48.78733
2005	48.34854
2006	48.69157
2007	49.2667
2008	49.4968
2009	49.4782
2010	49.74625
2011	50.13226
2012	49.81037
2013	49.40106
2014	49.26237
2015	49.62113
2016	49.61696
2017	50.03873
2018	50.14042