Year % of female population 1960 34.1831742998883 1961 34.3107858582779 1962 34.3594434281279 1963 34.2535570184753 1964 34.1377982652221 1965 34.0115346802728 1966 33.7708818205327 1967 33.5305017103763 1968 33.1876939765571 1969 32.737665852433 1970 32.2211394339931 1971 31.6514233871956 1972 31.1857463090361 1973 30.7668882428234 1974 30.2610206093611 1975 29.6702023642371 1976 29.1056172355442 1977 28.551997707288 1978 27.9728986043323 1979 27.460716502418 1980 27.0690903951808 1981 26.6948653143538 1982 26.351080735391 1983 26.1728835439598 1984 25.9848204990429 1985 25.7420055689438 1986 25.4814282647112 1987 25.0915638742237 1988 24.7334866220736 1989 24.58183492502 1990 24.5113746855674 1991 24.3738163661322 1992 24.3029937775185 1993 24.3126465435669 1994 24.1598071163518 1995 23.8437682592476 1996 23.5623773510432 1997 23.3144667323859 1998 23.058131000157 1999 22.8986657050126 2000 22.7958174769712 2001 22.6690580063668 2002 22.5252163512522 2003 22.3171594773273 2004 22.0436185738659 2005 21.7068249981382 2006 21.3737558189519 2007 21.0855560966522 2008 20.8287685713737 2009 20.6789046691743 2010 20.6023814640189 2011 20.4615863650231 2012 20.3201050344644 2013 20.2356371831265 2014 20.0970784589943 2015 19.8500485672657 2016 19.6220292641889 2017 19.4076468693579 2018 19.1053837442034 2019 18.8273843554539 2020 18.6701870014531 2021 18.5640883595319 2022 18.4216389889115 2023 18.2415978616466