Year	% female
1971	50.96188
1972	50.59923
1973	51.21175
1974	51.09548
1975	51.31618
1976	51.24485
1977	51.36329
1978	51.53795
1979	51.65722
1980	51.87894
1981	51.6645
1982	51.6124
1983	51.38287
1984	51.31208
1985	51.17616
1986	51.19141
1987	51.14449
1988	51.06552
1989	51.0512
1990	51.0778
1991	50.97256
1992	50.87058
1993	49.7626
1994	49.91194
1995	50.13489
1996	50.45303
1997	50.6959
1998	50.19224
1999	50.21454
2000	50.63962
2001	50.77339
2002	50.95483
2003	50.87424
2004	50.66633
2005	50.97136
2006	50.63816
2007	50.56342
2008	50.37502
2009	50.15603
2010	49.88201
2011	49.46125
2012	49.30156
2014	49.32637
2015	49.47811
2016	49.4879
2017	48.58142