Year	% female
1970	42.27427
1971	42.35582
1972	42.87931
1973	42.9697
1974	42.7105
1975	41.94003
1976	43.27348
1977	42.91609
1978	43.29376
1979	44.69815
1980	44.40449
1981	44.64952
1982	45.0753
1983	45.3018
1984	44.88967
1985	43.68531
1986	43.90202
1987	45.03159
1988	45.018
1989	45.23391
1990	43.93677
1991	43.55309
1992	43.01396
1993	42.9013
1994	44.7386
1995	44.97818
1996	45.27092
1997	44.51732
1998	45.03082
1999	45.3238
2000	45.13497
2001	45.02005
2002	44.43868
2003	44.64129
2004	44.93049
2005	46.03339
2006	46.48562
2007	46.52698
2008	46.47332
2009	46.49236
2010	44.15634
2011	44.01124
2012	43.92597
2013	43.66468
2014	43.6691
2015	43.87071
2016	43.64574
2017	42.87324
2018	42.41634