Year % of female population 1960 0.3306002397328577 1961 0.3324357389303981 1962 0.3363482763298159 1963 0.3398987823329264 1964 0.3430690178342278 1965 0.3456240795955434 1966 0.34758986842530304 1967 0.3489722284846782 1968 0.35025690809043974 1969 0.35142416883845207 1970 0.3516097117682484 1971 0.35009757650791584 1972 0.34827558206500925 1973 0.34759927831408255 1974 0.34785198497471814 1975 0.34896807878044117 1976 0.3538010085765489 1977 0.36132753715306876 1978 0.36769494764758226 1979 0.37222171746359484 1980 0.3716005015751364 1981 0.36740056850030206 1982 0.3646823775786702 1983 0.3628035856096711 1984 0.36123742059937236 1985 0.36081939263519547 1986 0.36094551590061724 1987 0.36273533038588773 1988 0.36850523924084605 1989 0.3739986518496437 1990 0.3770459432301632 1991 0.3794444114422563 1992 0.3806930889900937 1993 0.3815380742952995 1994 0.3818632861882411 1995 0.381854747617284 1996 0.38187083578229675 1997 0.3816065623057896 1998 0.38064264467839437 1999 0.3790616505217314 2000 0.3776735837360387 2001 0.3765278981261805 2002 0.37603733062107786 2003 0.3762007001677708 2004 0.37636907017230203 2005 0.3767167234447927 2006 0.3772467873342164 2007 0.3778970106085674 2008 0.3788119856085639 2009 0.3801555017420448 2010 0.3816277390473249 2011 0.38242568003035027 2012 0.38276201413753325 2013 0.3826965782932799 2014 0.38238040915362304 2015 0.38226657074128945 2016 0.3822958483266558 2017 0.38275158427909034 2018 0.3835603927486797 2019 0.3844171780820673 2020 0.38321060057792466 2021 0.3785494501302119 2022 0.37457606097863333 2023 0.3738752418016962