Year % of female population 1960 18.4185541841855 1961 18.6231884057971 1962 18.7048381597616 1963 18.6653635228322 1964 18.5123984677618 1965 18.2365536687231 1966 17.903024845826 1967 17.6066394850674 1968 17.3547713595611 1969 17.1151470975318 1970 16.8682061814357 1971 16.6139004952411 1972 16.3340025983229 1973 16.0256660676615 1974 15.702511393387 1975 15.3795742138183 1976 15.0688478060755 1977 14.7839199816752 1978 14.5689761698811 1979 14.4544170749969 1980 14.3797276853253 1981 14.2397682816732 1982 14.0454155315894 1983 13.8348120843907 1984 13.5980568947117 1985 13.3507733679695 1986 13.0650476069107 1987 12.7212389380531 1988 12.3416177135111 1989 11.950467744552 1990 11.5979427790466 1991 11.3857832492867 1992 11.3243349683148 1993 11.3287037863506 1994 11.3474798225453 1995 11.3379128701594 1996 11.2299274943285 1997 11.0146398803163 1998 10.7467213846017 1999 10.4604380867233 2000 10.1898388296109 2001 9.94335777955315 2002 9.68661737456599 2003 9.41502468612071 2004 9.14657933174268 2005 8.8809606365312 2006 8.64056991774383 2007 8.45353970042295 2008 8.34764207419508 2009 8.31965684446102 2010 8.32661554901483 2011 8.33176177724135 2012 8.32574464048568 2013 8.28768822642518 2014 8.20786743128944 2015 8.11458604060181 2016 8.00615039455361 2017 7.82958901450822 2018 7.58587832647862 2019 7.31457650912494 2020 7.03047940857642 2021 6.7797273242963 2022 6.59551740020972 2023 6.4567376999343