Year	% female
1976	50.16975
1977	48.96747
1978	45.36396
1979	48.22163
1980	47.10263
1981	47.0016
1985	46.83677
1986	47.30291
1998	46.91976
1999	46.69814
2000	46.91634
2001	46.9694
2002	47.2961
2003	47.29017
2004	47.90269
2005	48.2544
2006	48.55281
2007	49.14647
2008	49.77537
2009	49.91515
2010	50.85833
2011	49.82388
2012	50.17602
2013	50.11836
2014	50.0252
2015	50.05274
2016	50.30349
2017	50.3726
2018	50.26082