Year % of female population 1960 0.532961470133145 1961 0.504010207801677 1962 0.47702213069885 1963 0.448293006297647 1964 0.416903993418138 1965 0.385510839657727 1966 0.352652117358 1967 0.320047557822847 1968 0.31109685695959 1969 0.330361041527819 1970 0.355756957509086 1971 0.38040981347055 1972 0.405141447749582 1973 0.435009048637833 1974 0.474678688222717 1975 0.532117421618012 1976 0.546422228779165 1977 0.50523793238107 1978 0.45083517109216 1979 0.390357806125413 1980 0.339816595795082 1981 0.31832842940909 1982 0.312924740019597 1983 0.303956351363452 1984 0.2927932123199 1985 0.284521326122432 1986 0.282016666548865 1987 0.281925268510395 1988 0.280857117168604 1989 0.277154225110727 1990 0.270403752567841 1991 0.261417772330945 1992 0.252369105995025 1993 0.245025178757161 1994 0.241190055002376 1995 0.240234896343091 1996 0.239918702554231 1997 0.239490174674961 1998 0.238326064531118 1999 0.234886237442084 2000 0.227994243289901 2001 0.216254288630692 2002 0.199241343540881 2003 0.17915387717491 2004 0.15941503006838 2005 0.141787258760804 2006 0.115170168342889 2007 0.0775035234248635 2008 0.0415645022689434 2009 0.0153143371168484 2010 0.021913663201519 2011 0.0625051673546253 2012 0.118565938773706 2013 0.186314010720681 2014 0.257062697746242 2015 0.315087221299005 2016 0.347447178175767 2017 0.358526816729582 2018 0.359022036024547 2019 0.358040409791881 2020 0.355593268017357 2021 0.362289188192173 2022 0.383460960684624 2023 0.4088420335634