Year % of female population 1960 25.5781584582441 1961 26.0039761431412 1962 26.5204109969453 1963 27.1139546947951 1964 27.6702567009474 1965 28.0544362502851 1966 28.5602448224326 1967 29.2760330578512 1968 29.8062775870525 1969 29.9703433329531 1970 29.8627367525005 1971 29.6106608323803 1972 29.2547741034001 1973 28.8112621868579 1974 28.3447737268281 1975 27.8675188843695 1976 27.3924977127173 1977 26.9100110926234 1978 26.3922757529823 1979 25.7668711656442 1980 24.870920015701 1981 23.729849269627 1982 22.9749672820427 1983 22.5661137315173 1984 21.9540608301466 1985 21.1172423852007 1986 20.4500408068089 1987 20.020538464973 1988 19.5121428877372 1989 18.9430760359173 1990 18.3188371261766 1991 17.7116678487224 1992 17.1895533714624 1993 16.7427129743948 1994 16.3708462484199 1995 16.0638797557539 1996 15.8123727589151 1997 15.6306284379107 1998 15.5062021599243 1999 15.3927981709641 2000 15.2756821325286 2001 15.2175576608151 2002 15.2115858668858 2003 15.1739786067618 2004 15.0794404569692 2005 14.8794778026818 2006 14.9264811221234 2007 15.2350963901843 2008 15.4868636998657 2009 15.7493414667961 2010 15.9661479041236 2011 16.079667574151 2012 16.089958010106 2013 15.9638767392812 2014 15.649930933386 2015 15.2515679050539 2016 14.9725026105117 2017 14.5186729389821 2018 13.9405833389727 2019 13.5407917016653 2020 13.2639262692171 2021 13.0632086570908 2022 12.8105948050617 2023 12.4371570754115