Year % of female population ages 15+ (national estimate) 1966 2.91 1975 3.29 1977 3.79 1983 2.44 1984 5.93 1985 8.53 1987 7.78 1996 11.82 1997 7.37 2000 6.65 2009 13.95 2010 14.16 2012 15.8 2013 16.6 2014 15.578 2015 16.3 2016 16.94