Year	% female
1970	49.64168
1971	49.47764
1972	49.81057
1973	50.43581
1974	51.5093
1979	51.69551
1999	51.23021
2000	51.10692
2001	51.43955
2002	51.51125
2003	51.34833
2004	51.65723
2005	51.66359
2007	51.47263
2008	51.4235
2009	51.31418
2010	51.15403
2011	51.00768
2012	50.81348
2013	50.49706
2014	50.3012
2015	50.04801
2016	49.75254
2017	49.52436