Year % of female population ages 15+ (national estimate) 1960 36.45 1965 41.14 1970 43.93 1974 51.01 1976 52.19 1977 53.67 1978 54.94 1979 55.69 1981 57.01 1983 58.262 1984 59.301 1985 59.66 1986 60.779 1987 60.359 1988 60.775 1989 60.548 1990 61.463 1991 61.701 1992 62.392 1993 61.853 1994 58.293 1995 57.474 1996 58.724 1997 59.012 1998 59.511 1999 60.028 2000 60.217 2001 59.66 2002 60.241 2003 59.721 2004 60.385 2005 60.392 2006 60.931 2007 60.663 2008 59.907 2009 59.65 2010 58.846 2011 58.589 2012 58.148 2013 57.596 2014 57.019 2015 56.731 2016 57.56 2017 57.611 2018 57.561 2019 57.988 2020 57.748 2021 58.107 2022 59.42 2023 59.698