Year	% female
1975	49.80076
1976	48.85903
1978	49.53508
1979	49.7148
1980	48.98306
1981	49.03581
1982	49.48805
1983	49.76682
1984	49.31238
1985	49.44697
1986	49.93664
1987	49.99294
1991	50.04779
1992	50.30015
1993	50.38358
1994	50.84288
1995	50.56922
1996	50.26585
1997	50.59545
1998	50.43155
1999	50.21274
2000	50.19709
2001	50.11141
2002	49.97264
2003	49.60448
2004	49.36538
2005	49.49981
2006	49.52168
2007	49.42532
2008	49.24665
2009	49.15718
2010	48.97907
2011	48.91902
2012	48.78519
2013	48.76297
2014	48.95712
2015	49.00121
2016	48.88355
2017	48.87971
2018	48.8393