Year	% female
1971	48.42163
1972	48.50428
1973	48.63848
1974	48.81531
1975	48.91905
1976	49.00588
1977	49.09871
1978	49.16104
1979	49.29419
1980	49.38907
1981	49.50804
1982	49.54586
1983	49.54683
1984	49.52639
1985	49.48248
1986	49.70269
1987	49.46672
1988	49.46761
1989	49.51783
1990	49.60317
1991	49.67709
1992	49.75527
1993	48.6695
1994	48.78464
1995	48.90674
1996	49.0006
1997	49.12873
1998	49.18675
1999	49.16207
2000	49.17657
2001	49.0689
2002	49.14624
2003	49.56663
2004	49.36893
2005	49.34771
2006	49.32641
2007	49.20376
2008	49.19499
2009	49.09843
2010	48.91182
2011	49.00303
2012	48.8358
2013	49.92059
2014	49.80458
2015	49.59595
2017	49.60724