Year % of female population 1960 0.885048332426665 1961 0.852290146544852 1962 0.818199960087807 1963 0.792908630430547 1964 0.768177669607545 1965 0.743984118443756 1966 0.752770487022456 1967 0.802828844106875 1968 0.866876385214842 1969 0.880359186548112 1970 0.848539201821255 1971 0.819852257551938 1972 0.780952065129081 1973 0.721615898354781 1974 0.660857170624251 1975 0.607838344333089 1976 0.558237283683053 1977 0.53315671827138 1978 0.526025750212915 1979 0.520253311836178 1980 0.519429607487627 1981 0.521552139166159 1982 0.520061777035333 1983 0.521397406937525 1984 0.525213273019825 1985 0.52634709170929 1986 0.520031376194765 1987 0.508613850164343 1988 0.501519756838906 1989 0.494549178671051 1990 0.480098913529582 1991 0.474257361943424 1992 0.477947235639397 1993 0.479568388450394 1994 0.488609370961588 1995 0.499569545658474 1996 0.504285833502223 1997 0.500742924666269 1998 0.49038185472294 1999 0.48154455132904 2000 0.470700291280416 2001 0.48308654305441 2002 0.512188383312435 2003 0.527833591871155 2004 0.547791492400286 2005 0.582568899014729 2006 0.59847980253105 2007 0.583306105975284 2008 0.56554688383667 2009 0.546215769092136 2010 0.5221600746979 2011 0.512811381563719 2012 0.513983503493687 2013 0.508397170209649 2014 0.497094626118675 2015 0.478508856171762 2016 0.461897560654875 2017 0.452130025801338 2018 0.447309773957338 2019 0.448700881740302 2020 0.459456963428149 2021 0.479966137822088 2022 0.503797054496277 2023 0.526539029705577