Year % of female population ages 15+ (national estimate) 1960 22.62 1977 27.93 1979 29.4 1980 29.15 1981 30.64 1982 33.36 1983 34.012 1985 34.793 1986 35.87 1987 41.459 1988 41.801 1989 42.254 1990 43.889 1991 44.794 1992 46.105 1993 46.539 1994 47.695 1995 48.304 1996 49.29 1997 50.64 1998 51.467 1999 53.048 2000 54.142 2001 55.101 2002 55.879 2003 56.475 2004 56.929 2005 55.618 2006 56.117 2007 57.391 2008 58.273 2009 58.783 2010 58.706 2011 58.774 2012 59.301 2013 59.231 2014 58.444 2015 58.789 2016 58.73 2017 58.788 2018 59.11 2019 59.829 2020 59.868 2021 62.81 2022 63.554 2023 64.081