Year	% female
1970	47.80072
1971	47.3023
1972	47.52382
1973	47.61471
1974	47.66319
1975	47.57382
1976	47.74851
1977	48.12352
1978	48.05615
1979	48.06574
1980	47.68459
1981	47.72864
1982	47.88208
1983	47.74038
1984	47.68568
1986	48.15726
1987	47.58417
1988	47.9893
1989	47.63434
1991	47.17849
1992	47.30783
1993	47.49599
1994	47.29359
1995	47.00741
1996	47.23153
1997	47.13367
1998	47.1291
1999	46.99849
2000	47.37827
2001	47.62515
2002	47.8566
2003	48.07318
2004	47.86124
2005	47.87664
2006	47.69344
2007	47.67467
2008	47.8892
2009	48.09874
2010	48.29809
2011	48.37663
2012	48.38725
2013	48.56498
2014	48.65135
2015	48.49122
2016	48.43962
2017	48.40192
2018	48.56861