Year % of female population 1960 39.8041607314972 1961 40.2347229827472 1962 40.6353429052071 1963 40.9533584046267 1964 41.1734298268286 1965 41.330323220087 1966 41.5349723425437 1967 41.8470819109398 1968 42.2114252949875 1969 42.4329701344067 1970 42.2168849666266 1971 41.7373963506743 1972 41.2745524120459 1973 40.7639914018595 1974 40.1430367171502 1975 39.3732219193589 1976 38.495887305857 1977 37.5687712863505 1978 36.6175695283595 1979 35.6988696638256 1980 34.8496195084327 1981 34.1484428229192 1982 33.5636369897805 1983 33.0238615004678 1984 32.6384305702218 1985 32.3695223183119 1986 32.0905391055829 1987 31.8087342182936 1988 31.5394422732793 1989 31.2820702813849 1990 30.996733629087 1991 30.7234003128641 1992 30.598505740314 1993 30.6184937789189 1994 30.5922986478542 1995 30.4488712689624 1996 30.2615453402084 1997 30.0495210646239 1998 29.803833873753 1999 29.482484563184 2000 29.0461701442497 2001 28.5790515943129 2002 28.1857909121469 2003 27.8631365407225 2004 27.5494119417991 2005 27.2306133416934 2006 26.9313079833648 2007 26.6328246161535 2008 26.3550302187517 2009 26.1363067890101 2010 25.7106482501834 2011 25.0494892504744 2012 24.4093433328531 2013 23.7366332571068 2014 23.0743503541496 2015 22.4537451525312 2016 21.7990531555003 2017 21.1269268391406 2018 20.4637503853037 2019 19.8289540153828 2020 19.2465283265437 2021 18.6933360892154 2022 18.1043720656592 2023 17.4959793475188