Year	% female
1970	47.50933
1971	49.2843
1972	49.45968
1973	49.99525
1975	51.54608
1976	51.23849
1977	49.45179
1978	49.37292
1982	49.24472
1985	49.48148
1986	49.49167
1987	49.42831
1988	49.74762
1989	51.09264
1990	50.50847
1991	51.03659
1992	50.51686
1994	51.03396
1996	50.47427
1998	50.57223
1999	50.30781
2000	50.13318
2001	49.99585
2002	49.95575
2003	49.8595
2004	50.05232
2005	50.10756
2006	50.28436
2007	50.28772
2008	50.39812
2009	50.40973
2010	50.47808
2011	50.44314
2012	50.81257
2016	50.53689