Year	% female
1971	46.1725
1972	46.22085
1973	46.46525
1974	46.29819
1975	46.87334
1976	43.45748
1977	45.17103
1978	47.44777
1979	47.05367
1980	47.77841
1981	49.00988
1982	49.03814
1983	46.82743
1985	48.22227
1988	48.50537
1989	48.61499
1990	48.81024
1991	49.26381
1992	47.65544
1993	48.74211
1994	49.02351
1995	50.8281
1996	48.93709
1998	48.98801
1999	49.10168
2000	48.99704
2001	49.03021
2002	49.0298
2003	48.94626
2004	48.9483
2005	48.90527
2006	49.01795
2007	49.16381
2008	49.22205
2009	49.35625
2010	49.42927
2011	49.37493
2012	49.48552
2013	49.5828
2014	49.66747
2015	49.69886
2016	49.72191
2018	49.79428