Year	% female
1971	53.51453
1972	49.5864
1973	53.16991
1974	53.16149
1975	53.19149
1976	52.17662
1977	52.03041
1978	51.79351
1979	49.93347
1980	49.83095
2001	51.11695
2002	51.47864
2003	52.44635
2004	53.071
2005	52.43902
2006	51.46082
2010	53.41784
2011	53.28704
2012	53.0303
2013	53.07784
2014	52.47984
2015	51.95545