Year	% female
1970	42.48647
1971	42.56013
1972	42.82168
1973	42.97823
1974	42.81714
1975	42.77727
1976	43.50104
1977	43.41246
1978	43.69074
1979	44.30243
1980	44.52475
1981	45.46326
1982	44.9039
1983	45.28224
1984	45.04342
1985	44.46511
1986	44.69416
1987	45.42964
1988	45.36662
1989	45.32658
1990	44.45768
1991	44.27028
1992	44.04447
1993	43.94374
1994	44.78826
1995	44.94429
1996	45.19909
1997	44.67137
1998	44.69357
1999	44.9142
2000	44.88101
2001	44.80934
2002	44.40095
2003	44.49312
2004	44.4825
2005	45.17038
2006	45.39991
2007	45.46306
2008	45.41816
2009	45.3356
2010	43.61373
2011	43.47067
2012	43.395
2013	43.46294
2014	43.41648
2015	43.52328
2016	43.36764
2017	42.81232
2018	42.47584