Year % of female population 1960 40.103492621379 1961 39.7494476827958 1962 39.7979353822071 1963 40.457604804775 1964 41.0464192169551 1965 41.2712302830465 1966 41.3135183593917 1967 41.0916916127453 1968 40.8638671146441 1969 40.7624040230943 1970 40.5902178228651 1971 40.4471381655795 1972 40.1896505866253 1973 39.939873221855 1974 39.9439066601276 1975 40.0027896262362 1976 40.0067717014217 1977 39.5153428042448 1978 38.2453969010235 1979 36.8927569045474 1980 35.7604798829704 1981 34.7345716759975 1982 33.9250989637143 1983 33.0029127450421 1984 31.9081932556539 1985 30.9073578030694 1986 30.0621970398479 1987 29.4494636827502 1988 28.931966045125 1989 28.5179303006375 1990 28.3362852519605 1991 28.1690236265717 1992 27.905535830682 1993 27.631748469344 1994 27.2716586473169 1995 26.8124535670517 1996 26.263889466679 1997 25.5859905648869 1998 24.9234770625459 1999 24.3132616009697 2000 23.6440626399246 2001 22.8670030544299 2002 21.9524232608991 2003 21.0432572358229 2004 20.1757544166484 2005 19.2777758123565 2006 18.5666198699152 2007 18.1340657373595 2008 17.8263191706142 2009 17.6073975289813 2010 17.4436900173524 2011 17.322707849643 2012 17.2885820277418 2013 17.3076483393774 2014 17.3422648108662 2015 17.3441490042891 2016 17.3445088540229 2017 17.409926208775 2018 17.40867651678 2019 17.2999443008976 2020 17.0888421355618 2021 16.7619963697652 2022 16.3761410958043 2023 15.9577575182764