Year	% female
1970	51.57016
1971	51.05926
1972	51.03147
1973	51.30966
1974	51.97456
1975	51.84852
1976	52.29745
1977	51.76297
1978	51.61851
1979	51.85254
1980	51.6878
1981	51.9614
1982	50.96123
1983	50.89203
1984	50.70738
1985	50.81205
1986	50.68494
1989	50.50394
1990	50.6744
1991	49.71042
1992	49.99266
1993	50.62499
1998	50.1963
1999	50.13026
2000	49.72374
2002	49.59507
2003	49.47685
2004	49.49968
2005	49.46203
2006	49.64153
2007	49.76698
2008	49.77688
2009	49.84452
2010	49.87867
2011	49.88021
2012	50.00076
2013	49.37138
2014	49.34039
2015	49.28201
2016	49.28981
2017	49.24016