Year % of female population 1960 38.18395962956585 1961 38.08023023819332 1962 38.15523867981538 1963 38.57165242880956 1964 38.892753032983634 1965 38.959951714760614 1966 38.92340358961355 1967 38.71205960703153 1968 38.48483107023621 1969 38.321068256344795 1970 38.092260502350506 1971 37.880754895375695 1972 37.601157965696814 1973 37.3184720161684 1974 37.189917333602835 1975 37.0958027701637 1976 36.97515281503115 1977 36.556221434537946 1978 35.663810100005726 1979 34.74142209775094 1980 33.97767028739402 1981 33.29743435547662 1982 32.75788452187845 1983 32.15505086957031 1984 31.451537249697434 1985 30.801790062967118 1986 30.240665422972455 1987 29.81025090526454 1988 29.425484388814 1989 29.087202239181725 1990 28.86541665934472 1991 28.640687639255976 1992 28.350800889680283 1993 28.038901279446392 1994 27.665819667015704 1995 27.222263720710394 1996 26.708942875619613 1997 26.09905241387597 1998 25.48043763337057 1999 24.883216698818 2000 24.250049566766574 2001 23.549606431299313 2002 22.766805352951188 2003 22.00372820167335 2004 21.288611602947974 2005 20.56786375824292 2006 19.971108658410188 2007 19.561456508077296 2008 19.250499429559586 2009 19.009984251874812 2010 18.810015440515922 2011 18.647906321991798 2012 18.556969251568656 2013 18.511625292423588 2014 18.487086532646504 2015 18.451194719261057 2016 18.413992480006588 2017 18.409908161476476 2018 18.362658320401753 2019 18.24628722883458 2020 18.06365050256973 2021 17.815385702862628 2022 17.524142339246392 2023 17.198718628425425