Year % of female population 1960 17.4995390005532 1961 17.566203308224 1962 17.6352364444539 1963 17.7034123395714 1964 17.7670491156868 1965 17.8318209536638 1966 17.8967234871335 1967 17.9552752199881 1968 18.0111508308842 1969 18.0615677098567 1970 18.1052039689778 1971 18.141195202753 1972 18.1664539096352 1973 18.1747609686355 1974 18.1599892360716 1975 18.1235337138949 1976 18.0613523439188 1977 17.9767758707091 1978 17.881242526052 1979 17.777508720721 1980 17.6618634634439 1981 17.5341781416734 1982 17.4008220157255 1983 17.2679119492106 1984 17.1359601308207 1985 17.0075690986657 1986 16.8892495953746 1987 16.7823957231457 1988 16.6806972622843 1989 16.5822509832617 1990 16.4870240934417 1991 16.3798429646157 1992 16.2428687726722 1993 16.0789249319963 1994 15.9032787146292 1995 15.6902515152901 1996 15.433244841076 1997 15.0612089435878 1998 14.6663920686953 1999 14.3863426552938 2000 14.2099585229062 2001 14.1029772547715 2002 14.0607958765018 2003 14.0868831196077 2004 14.0786877908405 2005 13.9544552154134 2006 13.6995318298131 2007 13.3510380624828 2008 12.9699267195645 2009 12.604650237859 2010 12.2796491497871 2011 11.9844142154936 2012 11.719907050092 2013 11.4865072456347 2014 11.2778369634434 2015 11.0883848019977 2016 10.9226929274983 2017 10.7744159238068 2018 10.6383538871776 2019 10.5164540798623 2020 10.4070546788643 2021 10.306071673011 2022 10.2071613789976 2023 10.1061679390113