Year % of female population 1960 31.7463366256171 1961 31.7195624533507 1962 31.331695373893 1963 30.7996478736353 1964 30.2164467530664 1965 29.5565914311092 1966 28.7787371468663 1967 27.9649013746441 1968 27.1462844639917 1969 26.3455814181923 1970 25.5090077351185 1971 24.7243866066235 1972 24.0623770677336 1973 23.49601059541 1974 23.0849017695112 1975 22.8354476893658 1976 22.7605756320214 1977 22.7872168671765 1978 22.8293677869854 1979 22.9257531784349 1980 23.1060619269472 1981 23.3127506203817 1982 23.5450782937154 1983 23.8200900000286 1984 24.0820972256225 1985 24.2869671360087 1986 24.3986587306509 1987 24.3871765930437 1988 24.2688815686211 1989 24.0627539553883 1990 23.7698431119258 1991 23.4290842293131 1992 23.0591540900863 1993 22.6441589187775 1994 22.177685938779 1995 21.642109127056 1996 21.0660132521433 1997 20.4492849277909 1998 19.7496285072858 1999 19.0245169506935 2000 18.3329160879432 2001 17.6935454556317 2002 17.1032739216997 2003 16.5508519415037 2004 16.0400431883916 2005 15.5773299086247 2006 15.1634597621962 2007 14.8330124185156 2008 14.6142757398508 2009 14.4782106443132 2010 14.3853740720675 2011 14.2995791853775 2012 14.2242073310895 2013 14.1715749818839 2014 14.1385371334053 2015 14.1231763512585 2016 14.1389814410491 2017 14.222399795119 2018 14.3334761470711 2019 14.4154366463337 2020 14.4632318335781 2021 14.4749120486534 2022 14.2965229896119 2023 14.1168643711146