Year	% female
1970	48.45887
1971	48.48087
1972	48.61881
1973	48.87656
1974	49.0495
1975	49.18796
1976	49.22771
1977	49.26174
1979	49.47565
1980	49.42158
1981	49.54246
1982	49.83734
1983	49.69077
1984	49.61999
1985	49.79411
1986	49.60914
1987	49.63907
1988	49.5595
1989	49.56088
1990	49.42669
1991	49.40435
1992	49.03374
1993	49.11035
1994	49.5416
1995	48.39241
1996	50.04274
1997	49.98996
1998	50.28516
1999	50.1434
2000	50.32486
2002	51.58119
2003	51.34285
2004	50.30095
2005	50.2161
2006	49.82903
2007	49.30148
2008	49.82927
2009	49.40567
2010	49.85211
2011	49.99351
2012	50.02991
2013	50.20334
2014	50.1406
2015	50.07354
2016	50.23203
2017	50.36605