Year	% female
1970	42.27249
1971	42.26505
1972	42.27104
1973	42.24372
1974	42.1983
1975	43.41211
1976	44.08944
1977	44.29406
1978	44.26504
1979	44.28033
1980	44.32267
1981	44.33578
1982	44.19822
1983	44.09829
1984	44.24315
1985	44.44351
1986	44.90248
1987	45.0751
1988	45.21706
1989	45.2589
1990	45.40449
1991	45.66646
1992	45.86467
1993	46.03791
1994	46.14901
1995	46.25789
1996	46.34082
1997	46.48871
1998	46.52353
1999	46.55361
2000	46.58016
2001	46.66268
2002	46.68144
2003	47.30174
2004	47.27604
2005	47.24548
2006	47.27527
2007	47.32051
2008	47.50291
2009	47.5633
2010	47.60435
2011	47.62132
2012	47.72201
2013	48.27831
2014	48.28837
2015	48.29863
2016	48.59134
2017	48.5314
2018	48.49957