Year % of female population ages 15+ (national estimate) 1961 6.14 1972 5.44 1976 7.08 1977 7.08 1978 7.04 1979 7.05 1980 7.04 1981 12.58 1982 12.58 1983 11.32 1984 11.29 1985 9.16 1986 9.6 1988 11.31 1989 23.1 1990 11.31 1991 13.96 1992 13.96 1993 14.32 1994 14.73 1995 12.67 1997 14.97 1998 15.27 2000 16.26 2002 16.24 2004 17.96 2005 15.706 2006 19.085 2007 19.471 2008 19.977 2009 21.049 2010 22.07 2011 22.382 2012 20.96 2013 22.884 2014 23.22 2015 24.222 2016 22.566 2018 21.86 2019 23.525 2021 24.53