Year	% female
1970	43.66935
1971	43.6786
1972	44.24938
1973	44.3886
1974	44.2872
1975	42.98992
1976	44.79303
1977	44.67669
1978	45.23348
1979	46.72857
1980	46.28756
1981	46.21906
1982	46.68698
1983	47.05249
1984	46.47751
1985	44.77594
1986	44.73321
1987	46.15531
1988	46.00236
1989	46.13945
1990	44.46445
1991	44.56768
1992	44.06441
1993	44.01443
1994	46.35778
1995	46.42001
1996	46.70068
1997	45.85461
1998	46.30778
1999	46.60163
2000	46.51376
2001	46.31595
2002	45.74798
2003	46.22283
2004	46.52884
2005	47.83053
2006	48.19614
2007	48.17941
2008	48.20005
2009	48.31271
2010	45.42346
2011	45.28058
2012	45.4382
2013	45.63489
2014	45.57522
2015	45.80357
2016	45.61672
2017	45.02739
2018	44.53818