Year % of female population 1960 0.451334837471891 1961 0.457310563210714 1962 0.462947805997262 1963 0.467762217284206 1964 0.471771237037813 1965 0.475083771203567 1966 0.477549093535939 1967 0.47926248837825 1968 0.480895378904145 1969 0.482319079544185 1970 0.483151329898686 1971 0.483455518129582 1972 0.483384646574667 1973 0.483627391720201 1974 0.484482726406457 1975 0.486082806077428 1976 0.48677582496392 1977 0.485570659379936 1978 0.483915358149708 1979 0.480433786954172 1980 0.472164540690201 1981 0.458163363430902 1982 0.440095134583766 1983 0.415522297884124 1984 0.397017873904728 1985 0.389701362382239 1986 0.383832318431399 1987 0.386996208650028 1988 0.399686640087811 1989 0.412203637165776 1990 0.422544045265031 1991 0.431789541151326 1992 0.442025245178546 1993 0.451223853892172 1994 0.453203953619859 1995 0.452896330252739 1996 0.456138797724365 1997 0.466041379576049 1998 0.484151360721025 1999 0.50059009589345 2000 0.512842534418422 2001 0.518859252350786 2002 0.518345638549513 2003 0.514669395811674 2004 0.504158304194286 2005 0.491749127596413 2006 0.482717025136383 2007 0.478376241996359 2008 0.475881072577706 2009 0.472390131681469 2010 0.466257784436785 2011 0.457057434789341 2012 0.447570386595189 2013 0.437131260246717 2014 0.426048975353728 2015 0.416864796010363 2016 0.411193643222637 2017 0.409151953596745 2018 0.408152104194772 2019 0.404628287873755 2020 0.398108821081885 2021 0.388533196046241 2022 0.380258543687907 2023 0.375049723120728