Year	% of female population ages 15+ (national estimate)
1970	18.28
1981	32.83
1986	40.49
1988	41.17
2004	37.94
2006	39.31
2007	40.76
2008	41.17
2009	42.34
2010	41.83
2011	41.59
2012	57.38
2013	57.3