Year	% of female population ages 15+ (national estimate)
1960	30.48
1970	22.9
1979	39.79
1989	74.2
1991	75.91
1999	82.42
2006	79.38
2007	79.14
2008	80.78
2009	80.57
2011	77.56
2012	80.96
2013	80.59
2014	80.32
2015	80.98