Year % of female population 1960 30.307030382450066 1961 30.38772143204382 1962 30.20215410219125 1963 29.988703698169587 1964 29.915363982722116 1965 29.870332341627336 1966 29.4703542503296 1967 28.889009957323328 1968 28.394450467180878 1969 27.874030474126805 1970 27.360865978878937 1971 26.83000176609005 1972 26.222792498705754 1973 25.550688387500927 1974 24.87709958019326 1975 24.20444773108066 1976 23.53425197566354 1977 22.91784675410269 1978 22.364003562599954 1979 21.883618369373057 1980 21.509951973552756 1981 21.247260969778555 1982 21.060602821984173 1983 20.891137077496712 1984 20.720794098448767 1985 20.54687491682041 1986 20.39701085957848 1987 20.338537476423664 1988 20.368879815426315 1989 20.441668363597113 1990 20.545277089805616 1991 20.666215000845657 1992 20.770311249284635 1993 20.83085144897919 1994 20.82970939919062 1995 20.77297921416299 1996 20.69276730174274 1997 20.618777094346555 1998 20.55519574973941 1999 20.488429009676725 2000 20.390107594577966 2001 20.252142874289103 2002 20.103399499425205 2003 19.95112666554876 2004 19.774959413732507 2005 19.573222002106462 2006 19.381723401408983 2007 19.22557646438186 2008 19.095778441493785 2009 18.968797533544407 2010 18.833816530929255 2011 18.722051873577332 2012 18.63786649463225 2013 18.55300994824106 2014 18.462662686448407 2015 18.363159526154362 2016 18.263012364907837 2017 18.16057805438184 2018 18.029762214124087 2019 17.87082850049797 2020 17.663668028708404 2021 17.409254048137022 2022 17.138405193838786 2023 16.867101241181494