Year	% female
1971	50.27188
1972	50.65419
1973	50.76704
1974	50.94196
1975	50.78189
1976	50.67126
1977	50.61292
1978	50.61784
1979	50.69053
1980	50.96734
1982	50.92804
1983	51.05252
1984	50.99633
1985	50.79966
1986	50.68545
1987	50.57387
1988	50.49606
1989	50.94514
1990	50.95568
1991	51.25852
1992	51.52477
1993	50.4743
1994	50.38303
1995	50.54811
1996	50.58871
1997	50.21874
1998	50.29706
1999	50.39926
2000	50.59604
2001	50.95227
2002	51.05954
2003	51.1599
2004	50.98118
2005	50.97256
2006	50.83651
2007	50.86956
2008	51.05278
2009	51.27821
2010	51.43869
2011	51.45096
2012	51.35824
2013	51.1713
2014	51.06905
2015	51.09503
2016	51.04509
2017	51.07065