Year	% female
1971	49.95617
1972	49.9895
1973	50.00764
1974	50.0115
1975	49.98776
1976	49.96231
1977	49.95652
1978	49.96792
1979	50.00705
1980	50.07111
1982	50.50127
1983	50.50574
1984	50.43279
1985	50.35625
1986	50.29836
1987	52.95746
1988	52.94575
1989	47.45981
1990	46.62218
1991	48.08507
1992	49.87658
1993	50.47098
1994	49.12655
1995	49.56149
1996	49.63976
1997	49.65441
1998	49.99723
1999	49.86801
2000	49.2744
2001	49.58153
2002	49.50561
2003	49.46271
2004	49.14804
2005	49.19183
2006	49.12375
2007	49.05179
2008	49.0214
2009	48.99047
2010	48.83198
2011	48.75101
2012	48.73021
2013	48.84565
2014	48.78077
2015	48.90303
2016	48.87799
2017	48.87003