Year	% female
1970	51.00955
1972	50.30517
1973	50.83043
1975	51.26766
1976	50.21673
1977	51.62061
1978	50.21103
1979	49.79373
1980	48.65611
1981	48.49597
1982	49.99803
1983	49.74012
1986	49.90064
1994	51.20921
1995	49.1627
1996	48.6543
1997	49.45945
1998	50.01394
1999	49.508
2000	50.36668
2001	50.41244
2002	50.23256
2003	50.68511
2004	50.55967
2005	50.59142
2006	51.17671
2007	51.389
2009	51.17779
2010	50.84622
2011	50.92044
2012	50.32859
2014	50.88899
2015	50.7117
2016	50.66246
2017	50.9014
2018	50.9479