Year % of female population 1960 18.4303767820339 1961 18.4434597016237 1962 18.4525662830085 1963 18.4526054584983 1964 18.4336172492263 1965 18.4037893974422 1966 18.3722923146894 1967 18.3439223661568 1968 18.3264081850468 1969 18.3265917156234 1970 18.3459714914325 1971 18.3831079553357 1972 18.4366536786494 1973 18.5020124000451 1974 18.5808054648625 1975 18.6797340283852 1976 18.800625419472 1977 18.9378578056589 1978 19.0621640317804 1979 19.1398969604846 1980 19.1636414286294 1981 19.1353301371162 1982 19.0622443525098 1983 18.9627175974082 1984 18.8464367737135 1985 18.7107210852704 1986 18.5456463944027 1987 18.3574179860367 1988 18.1457864980611 1989 17.9192694709236 1990 17.7041269415727 1991 17.4967948615271 1992 17.2892453463202 1993 17.1015481204128 1994 16.9261016138904 1995 16.742387913263 1996 16.5729450254847 1997 16.4371239093686 1998 16.3314694091531 1999 16.2736120045106 2000 16.2555953162278 2001 16.2471897469187 2002 16.2446071862873 2003 16.2490278281937 2004 16.2438630742241 2005 16.2361005749555 2006 16.2614913730247 2007 16.293572490818 2008 16.300103582355 2009 16.3101030808091 2010 16.3149859443079 2011 16.2775851577096 2012 16.2258740220423 2013 16.1757179590983 2014 16.0899704949415 2015 15.9488522643918 2016 15.7628531235404 2017 15.5519482371266 2018 15.3408608412075 2019 15.1345178754702 2020 14.9489343739998 2021 14.795224777755 2022 14.6532622843345 2023 14.5046959653482