Year	% female
1971	49.40301
1972	49.44816
1974	48.80908
1975	49.16039
1976	48.52659
1982	48.54631
1984	48.06716
1986	48.52408
1987	48.92044
1991	49.22833
1994	48.50837
1998	47.51925
1999	47.53503
2000	48.1885
2001	48.33613
2002	48.38941
2003	48.66069
2004	48.36907
2005	47.02654
2007	48.25465
2008	47.38604
2009	47.78322
2010	47.66193
2011	48.70912
2012	48.49033
2013	48.13726
2014	48.67059
2015	48.84748
2016	48.87321
2017	49.0327
2018	49.34839