Year	% female
1970	42.59328
1971	48.71508
1972	47.65047
1973	43.94131
1974	44.27742
1975	68.70199
1976	73.45925
1977	46.40372
1978	46.13414
1979	45.80601
1980	45.73744
1981	46.13238
1982	46.26993
1985	46.76082
1991	47.62997
1995	47.63208
1998	47.88807
1999	47.73733
2000	47.51093
2001	47.53207
2002	47.50453
2003	47.14195
2004	48.18547
2005	48.10362
2006	48.52884
2007	48.58531
2008	48.70573
2009	48.63014
2010	48.80502
2011	48.80947
2012	48.25696
2013	48.59014
2014	48.57664
2015	48.66339
2016	48.6434
2017	48.64563
2018	48.66198