Year % of female population ages 15+ (national estimate) 1960 49.75 1970 36.5 1974 58.59 1975 62.04 1976 61.26 1978 64.27 1980 40.43 1981 65.2 1982 66.49 1985 40.54 1988 47.01 1990 62.4 1991 39.17 1994 62.39 1995 61.8 1996 60.6 1997 59 1998 57.61 1999 56.5 2001 53.6 2002 55.3 2003 53 2004 55.3 2007 57 2008 55.501 2009 53.631 2010 52.207 2011 52.286 2012 52.593 2013 52.896 2014 53.104 2015 56.246 2016 56.057 2017 56.866 2018 56.267 2019 57.545 2020 55.371 2021 56.037 2022 58.373