Year	% female
1971	49.25692
1972	49.24306
1973	49.29901
1974	49.64195
1975	49.41512
1976	50.01042
1977	50.24918
1978	50.48059
1979	50.63072
1980	50.6194
1981	50.80747
1982	51.08475
1983	51.22808
1984	51.06833
1985	50.87262
1986	50.76171
1987	50.63284
1988	50.7321
1989	50.89053
1990	50.95638
1991	51.18007
1992	51.2022
1993	51.37319
1994	51.67985
1995	51.41488
1996	51.13072
1997	51.33488
1998	51.48837
1999	51.82042
2000	51.71736
2001	51.52202
2002	51.43406
2003	51.30705
2004	51.36755
2005	51.19237
2006	51.13773
2007	51.35348
2008	51.41846
2009	51.38969
2010	51.09737
2011	50.93915
2012	51.27651
2013	50.96416
2014	51.1397
2015	51.56288
2016	51.54486
2017	51.10103