Year % of female population 1960 8.7869477818619 1961 8.94139985883595 1962 9.12237374159904 1963 9.33359123495318 1964 9.58803947421838 1965 9.88380016410931 1966 10.2005951953464 1967 10.5168090118444 1968 10.8238623519214 1969 11.1376003956219 1970 11.4717108793993 1971 11.8176353156374 1972 12.1700990965798 1973 12.5262506037772 1974 12.8788568134253 1975 13.2192629771497 1976 13.5414131444447 1977 13.8389619169217 1978 14.0908563336156 1979 14.2414867755798 1980 14.1911896482263 1981 13.9139512585983 1982 13.5218468808134 1983 13.187719881045 1984 13.1048464727667 1985 13.2787305188255 1986 13.5645075973739 1987 13.8785379348075 1988 14.2059505075054 1989 14.5471444361064 1990 14.8987511737425 1991 15.3162008753861 1992 15.777323662711 1993 16.1440311658652 1994 16.4505218900016 1995 16.9122738686947 1996 17.3959031475817 1997 17.7522770245472 1998 18.0944649437331 1999 18.4250976023212 2000 18.7358260346043 2001 19.0779995796182 2002 19.4450510440144 2003 19.7563602555021 2004 20.0513346001174 2005 20.330645658301 2006 20.5788472209312 2007 20.8085316593696 2008 20.9802938655608 2009 21.0608118801435 2010 21.0482346643318 2011 21.1532343331566 2012 21.4413378453123 2013 21.7900919683488 2014 22.1997993915796 2015 22.6169534094161 2016 23.0010530953358 2017 23.3983235307739 2018 23.8356354468798 2019 24.3030281041083 2020 24.759576353244 2021 25.1939123126098 2022 25.6060329388205 2023 25.9877909527305