Year	% female
1970	41.93552
1971	42.00592
1972	42.50633
1973	42.60929
1974	42.38524
1975	41.58908
1976	42.90229
1977	42.51792
1978	42.84862
1979	44.21876
1980	43.94128
1981	44.19103
1982	44.60632
1983	44.81339
1984	44.42518
1985	43.23465
1986	43.50635
1987	44.61355
1988	44.59812
1989	44.81062
1990	43.57109
1991	43.20519
1992	42.6915
1993	42.57236
1994	44.27312
1995	44.50462
1996	44.82326
1997	44.05461
1998	44.61452
1999	44.9146
2000	44.74943
2001	44.64297
2002	44.08434
2003	44.28958
2004	44.62589
2005	45.70291
2006	46.16886
2007	46.23324
2008	46.19069
2009	46.20483
2010	43.9178
2011	43.77128
2012	43.70054
2013	43.46188
2014	43.47306
2015	43.69431
2016	43.48289
2017	42.74199
2018	42.30348