Year	% female
1970	50.46579
1971	50.77869
1972	50.88948
1973	51.26401
1974	51.96509
2002	51.5579
2003	51.74738
2004	51.53751
2005	51.62273
2007	51.73531
2008	51.70602
2009	51.61897
2010	51.49838
2011	51.36766
2012	51.15442
2013	50.73076
2014	50.50958
2015	50.24987
2016	49.96678
2017	49.73256