Year	% female
1971	48.26716
1972	48.21214
1973	48.28542
1974	48.51546
1975	48.80285
1976	48.48495
1977	49.38276
1978	48.70389
1979	48.76156
1980	48.45599
1981	48.22309
1982	48.58529
1983	47.85895
1984	48.31847
1985	47.03058
1986	47.20751
1987	47.32669
1988	47.56591
1989	48.16751
1990	47.95494
1991	47.99046
1992	48.11935
1993	48.28956
1994	48.26104
1995	47.82175
1996	48.38545
1997	48.38582
1998	48.66283
1999	48.62519
2000	48.61504
2001	48.38055
2002	48.2043
2003	48.11101
2004	48.22302
2005	47.96256
2006	48.58931
2007	48.61716
2008	48.74496
2009	48.94626
2010	48.95737
2011	49.03427
2012	48.7037
2013	48.73811
2014	48.89083
2015	48.8101
2016	48.81837
2017	48.22065