Year	% female
1970	49.71042
1971	49.37859
1972	49.30067
1973	49.45958
1974	49.45182
1979	48.80242
1989	49.23021
1999	47.73136
2000	47.69871
2001	47.75299
2002	47.73741
2003	47.7199
2004	47.70676
2005	47.59256
2007	47.20861
2008	47.17788
2009	47.20053
2010	47.23665
2011	47.33328
2012	47.42665
2013	47.76243
2014	47.88528
2015	47.92504
2016	47.94264
2017	47.90777