Year	% female
1973	50.00217
1974	50.64807
1975	50.89982
1976	50.97483
1977	50.76965
1978	50.47814
1979	50.68413
1980	50.9779
1983	50.533
1984	50.62007
1985	50.44666
1986	50.49916
1987	50.46994
1988	50.42412
1989	50.51948
1990	50.33183
1991	50.1166
1992	49.86526
1993	50.00049
1994	49.69962
1999	48.51455
2000	48.72421
2001	48.57556
2002	48.4918
2003	48.3458
2004	48.8456
2005	48.78359
2006	48.79161
2007	48.91684
2008	49.18394
2009	49.24533
2010	49.26208
2011	49.13573
2012	49.14623
2013	49.13409
2014	49.02146
2015	48.88041
2016	49.04498
2017	49.05267