Year % of female population 1960 27.0960943348457 1961 27.4613702558996 1962 27.441016943239 1963 27.2901517749764 1964 26.9326353953653 1965 26.45326332575 1966 25.9530851929102 1967 25.3993392845112 1968 24.8464859320488 1969 24.2635126855155 1970 23.5805709323015 1971 22.9332344735186 1972 22.3829000064633 1973 21.8424392238511 1974 21.3386175407602 1975 20.8865182296917 1976 20.4739277626846 1977 20.1312177342051 1978 19.873220123868 1979 19.7383506480614 1980 19.7400367762893 1981 19.8298426031654 1982 20.0013055131352 1983 20.2647816581365 1984 20.5574897305721 1985 20.8056487784771 1986 21.0090874628877 1987 21.1803218680414 1988 21.3206283603319 1989 21.3487108017831 1990 21.2418698542127 1991 21.0742841204172 1992 20.825079297525 1993 20.5123887141219 1994 20.1903628558426 1995 19.8341160368873 1996 19.4160029123768 1997 18.9044070349983 1998 18.2587466461262 1999 17.540450947591 2000 16.8173202436041 2001 16.0532885987388 2002 15.2546044478104 2003 14.6207980695683 2004 14.2020431131563 2005 13.8553694302247 2006 13.5885879308237 2007 13.461182445283 2008 13.497584575789 2009 13.6322661576579 2010 13.7564327158649 2011 13.9412099338821 2012 14.2519923289711 2013 14.5977053057692 2014 14.9528449928609 2015 15.3115799687669 2016 15.6425457102717 2017 15.8844163875383 2018 16.0079760108057 2019 16.0595737039341 2020 16.07384877578 2021 16.1030844943038 2022 16.0875529723144 2023 15.9667690671635