Year % of female population 1960 22.7135713986603 1961 22.8190429553329 1962 22.8307322592647 1963 22.85627800474 1964 22.904976239449 1965 22.9510249611517 1966 22.9708397950667 1967 22.9427467749037 1968 22.8588275181245 1969 22.7402379125182 1970 22.599526865123 1971 22.4457620617572 1972 22.2496639581492 1973 21.9807212125316 1974 21.6365721544611 1975 21.2565241563641 1976 20.8644454822668 1977 20.469366554937 1978 20.0768666492166 1979 19.6714740116705 1980 19.2960818193765 1981 18.9804216352889 1982 18.707950726062 1983 18.4647413930136 1984 18.2226003473637 1985 17.9657656020816 1986 17.719892557866 1987 17.5111572759327 1988 17.3630777042933 1989 17.2884721047943 1990 17.2768136487208 1991 17.2954666250371 1992 17.307019986961 1993 17.2916518546294 1994 17.2350228086651 1995 17.1465658212546 1996 17.0553643135688 1997 16.9799096734912 1998 16.9199708270736 1999 16.8702825837144 2000 16.8356998358334 2001 16.7937293710576 2002 16.7224723494175 2003 16.631931728061 2004 16.5333803500429 2005 16.4322289990973 2006 16.3312784401136 2007 16.2433942522155 2008 16.1960208319667 2009 16.1983844349235 2010 16.2314999676296 2011 16.2617605647239 2012 16.2807725371245 2013 16.3023266411449 2014 16.3183457146544 2015 16.3203737640268 2016 16.3138443988287 2017 16.310653177682 2018 16.3028403762479 2019 16.2642076505074 2020 16.1997727370749 2021 16.1065770543707 2022 15.9638132289121 2023 15.786706298504