Year % of female population 1960 23.5846096832765 1961 23.919399834282 1962 24.0244334299492 1963 24.0150670557843 1964 23.7699723979878 1965 23.4342735062493 1966 23.1431042314546 1967 22.8781438397681 1968 22.6382165509745 1969 22.363675861796 1970 22.0323308182066 1971 21.7094335061696 1972 21.4051617768146 1973 21.08870640108 1974 20.7640577698734 1975 20.4558982080854 1976 20.1585698686646 1977 19.8634961525064 1978 19.5579411726204 1979 19.3845840462579 1980 19.3615447646482 1981 19.3546468517805 1982 19.3672894565679 1983 19.4374675793601 1984 19.5559561541714 1985 19.6677748592073 1986 19.7373223648458 1987 19.73814572456 1988 19.7024796786589 1989 19.6582098909535 1990 19.5577381882771 1991 19.4063213084633 1992 19.2719466282901 1993 19.115255578222 1994 18.8714881229318 1995 18.5504837904763 1996 18.1746816931677 1997 17.7572891883749 1998 17.2179824078535 1999 16.5775686651493 2000 15.9355152223294 2001 15.2509671955117 2002 14.5855993947739 2003 14.0621174693558 2004 13.632167112974 2005 13.2575875749501 2006 12.9686179701951 2007 12.7838401575312 2008 12.7166136155579 2009 12.7477690993568 2010 12.8164004809488 2011 12.9113600897202 2012 13.0698233500228 2013 13.2802704382273 2014 13.5067187512267 2015 13.7012675517109 2016 13.8507699662232 2017 13.9549670059975 2018 13.9707158008546 2019 13.9134053508603 2020 13.8393697833837 2021 13.7372055102422 2022 13.7901530464229 2023 13.6414057232187