Year % of female population 1960 28.7312551421201 1961 28.1683745540997 1962 27.5162594329432 1963 26.8709261716877 1964 26.2721879412654 1965 25.7362801839554 1966 25.2653631108017 1967 24.8085631342163 1968 24.3512509550113 1969 23.8749962594218 1970 23.3241513102229 1971 22.7420732872968 1972 22.1822788948149 1973 21.675772434621 1974 21.2371561692181 1975 20.8595384610011 1976 20.5150686614851 1977 20.20124542566 1978 19.8730870046911 1979 19.530914903478 1980 19.2260204137435 1981 18.9517142496358 1982 18.7166705763157 1983 18.54367062528 1984 18.4458459985067 1985 18.3877279238967 1986 18.330578365767 1987 18.2985354611881 1988 18.3395726707607 1989 18.3723532357091 1990 18.3421579962665 1991 18.2921089199199 1992 18.2427201827509 1993 18.2174960144473 1994 18.1899433557069 1995 18.1404722210565 1996 18.0565217168002 1997 17.9224158230902 1998 17.7312021986107 1999 17.5296464871128 2000 17.36077620722 2001 17.2223759432259 2002 17.1047673841433 2003 16.9677127659674 2004 16.8132941045417 2005 16.6440949267339 2006 16.4662140106372 2007 16.2894965922765 2008 16.128579786537 2009 15.9989362089265 2010 15.8984117732983 2011 15.8393718001352 2012 15.8055042314128 2013 15.789712539226 2014 15.7758669767315 2015 15.7431277652085 2016 15.6922468893522 2017 15.6231165550491 2018 15.5034634399561 2019 15.3233402872725 2020 15.1247449258081 2021 14.9009815004928 2022 14.655412770981 2023 14.4069852784533