Year	% female
1971	45.71414
1972	45.56148
1973	45.5913
1974	45.25331
1975	48.28914
1976	44.06928
1977	43.94689
1978	45.16293
1979	45.91162
1980	45.63897
1981	47.03472
1982	47.3881
1983	45.56774
1984	47.986
1985	48.17417
1986	48.1711
1987	48.53258
1988	48.49792
1989	48.59319
1990	47.57457
1991	46.56787
1992	45.16299
1993	42.56632
1994	41.94338
1995	39.30409
1996	40.04829
1997	41.00672
1998	42.99768
1999	44.04049
2000	44.586
2001	44.63769
2002	44.6961
2003	45.00765
2004	45.59577
2005	44.30935
2006	43.15565
2007	42.00958
2008	40.76012
2009	40.1628
2010	41.29089
2011	41.64146
2012	40.45566
2013	40.03165
2014	39.14905
2015	38.62566
2016	39.01036
2017	38.68595