Year	% female
1970	44.22384
1971	44.19907
1972	44.29857
1973	44.31676
1974	44.7089
1975	44.76277
1976	44.94477
1977	44.96938
1978	45.14347
1979	45.03153
1980	45.06861
1981	45.17622
1982	45.76155
1983	45.31195
1985	45.10386
1986	45.15647
1991	45.71891
1992	45.69498
1993	45.73774
1994	45.58009
1995	45.66719
1996	45.68745
1997	45.84028
1998	46.04788
1999	46.08696
2000	46.79549
2001	46.9943
2002	47.24116
2004	47.48525
2005	47.60621
2006	47.7458
2007	47.91317
2008	48.02463
2009	48.28786
2010	48.49939
2011	48.58692
2012	48.42527
2013	48.26144
2014	48.20042
2015	48.148
2016	48.11372
2017	48.1633
2018	48.26948