Year % of female population ages 15+ (national estimate) 1963 27.14 1975 29.31 1984 40.87 1985 32.51 1990 37.88 1991 43.78 1992 44.95 1993 43.97 1994 45.46 1995 46.72 1996 47.11 1998 49.631 1999 48.796 2000 49.338 2001 51.626 2002 49.966 2003 49.684 2004 49.435 2005 50.25 2006 51.912 2007 53.776 2008 54.74 2009 55.393 2010 55.084 2011 56.902 2012 56.62 2013 55.425 2014 56.933 2015 56.314 2016 56.35 2017 56.068 2018 55.96 2019 56.219 2020 54.413 2021 56.075 2022 55.653 2023 57.264