Year % of female population 1960 17.2531180559193 1961 17.4435334101636 1962 17.6439693580038 1963 17.8400009863653 1964 18.0165833363494 1965 18.1587776637497 1966 18.2688888010748 1967 18.3570444420507 1968 18.4303039715371 1969 18.4950877896047 1970 18.5576167843341 1971 18.6289661377274 1972 18.7253251051925 1973 18.8585315278002 1974 18.9674346190203 1975 19.1076878508425 1976 19.3473755183061 1977 19.6383834158358 1978 19.9690083788062 1979 20.329416421136 1980 20.6827439775092 1981 20.9877820512334 1982 21.2291618859927 1983 21.3943851670009 1984 21.4660185768835 1985 21.4158452407258 1986 21.1943561724815 1987 20.8101417522825 1988 20.3403127104722 1989 19.8477761884169 1990 19.3499952436168 1991 18.8485180792098 1992 18.3271235793231 1993 17.7378905925894 1994 17.1566249713543 1995 16.620647376845 1996 16.0870481981589 1997 15.5777881834867 1998 15.1010331596944 1999 14.6180428950601 2000 14.1399709041551 2001 13.704658036437 2002 13.2934220172815 2003 12.8839761893791 2004 12.4940701892903 2005 12.1888791351229 2006 12.0042658621913 2007 11.9400326166569 2008 11.9885051069849 2009 12.1200841930386 2010 12.2315083867464 2011 12.3684683154336 2012 12.5096590369602 2013 12.5784198573742 2014 12.6692474895867 2015 12.7746171418902 2016 12.8529496635839 2017 12.9687207946419 2018 13.0329140766075 2019 12.9635169513494 2020 12.7262694950813 2021 12.3564069658151 2022 11.8627722520164 2023 11.2643900440124