Year	% female
1970	48.32523
1971	48.31949
1972	48.36218
1973	48.52685
1974	48.3721
1975	48.40567
1976	48.56655
1977	48.3888
1978	48.41009
1979	48.3781
1980	48.41303
1981	48.4234
1982	48.49072
1983	48.52592
1984	48.52603
1985	48.55402
1986	48.55882
1987	48.58809
1988	48.5574
1989	48.59425
1990	48.61547
1991	48.63778
1992	48.65374
1993	48.64739
1994	48.58561
1995	48.51782
1996	48.46868
1997	48.44905
1998	48.40385
1999	48.39642
2000	48.40183
2001	48.41139
2002	48.4027
2003	48.4482
2004	48.45559
2005	48.44888
2006	48.49862
2007	48.50522
2008	48.50662
2009	48.55157
2010	48.57447
2011	48.60429
2012	48.61662
2013	48.66541
2014	48.6881
2015	48.67901
2016	48.6667
2017	48.58337
2018	48.5804