Year % of female population 1960 36.311523813247 1961 36.1985694363829 1962 36.2934334446999 1963 36.3764303818189 1964 36.1848677188054 1965 35.9557426497743 1966 35.6556239888704 1967 35.2320115765775 1968 34.6655764575063 1969 33.9941140609575 1970 33.2797634706435 1971 32.6122253972902 1972 31.9281009797654 1973 31.1836624070988 1974 30.4393289096257 1975 29.7074976728684 1976 28.9914516830712 1977 28.3663198779304 1978 27.8839679859631 1979 27.5076385998883 1980 27.2167427488184 1981 27.0168861428908 1982 26.8616796920891 1983 26.7156046018842 1984 26.5798129642178 1985 26.4404584496441 1986 26.3015116604882 1987 26.1569953407698 1988 25.9858714119646 1989 25.7718239753944 1990 25.5016151329237 1991 25.1111597564034 1992 24.8865215959621 1993 24.8932652054958 1994 24.8182365006063 1995 24.5949025749858 1996 24.1834010282046 1997 23.6143072848538 1998 22.9805218300233 1999 22.4149838765536 2000 22.0023207552483 2001 21.7178956958036 2002 21.3822926653185 2003 20.9515184978538 2004 20.4912739935639 2005 19.9883488040673 2006 19.4746426452759 2007 18.99611605092 2008 18.5639516492365 2009 18.157295781547 2010 17.7928066605667 2011 17.4547649664987 2012 17.1553343131904 2013 16.9032492854537 2014 16.6879704115884 2015 16.4985609544824 2016 16.296677858095 2017 16.0651920288092 2018 15.8134798295452 2019 15.6142435530924 2020 15.5065220041448 2021 15.4439980542995 2022 15.3822565753731 2023 15.2891163939346