Year % of female population 1960 25.2536172680679 1961 25.1327050169491 1962 24.9322527607236 1963 24.6921443009353 1964 24.4583648916935 1965 24.2725027818867 1966 24.1238432711755 1967 24.0121765872329 1968 23.9204028697509 1969 23.7945350492758 1970 23.6207448183774 1971 23.4311504130456 1972 23.2672605303459 1973 23.1303291813749 1974 23.0155740743051 1975 22.9545176811109 1976 22.9279264183646 1977 22.8817693616411 1978 22.8148933444346 1979 22.7226989561005 1980 22.5892341154343 1981 22.3861083824858 1982 22.0914290241545 1983 21.7357470331733 1984 21.3483265101202 1985 20.9121058209522 1986 20.443307982654 1987 19.9793517933779 1988 19.5111737999736 1989 19.0225470811068 1990 18.522149330464 1991 18.0317954915629 1992 17.5600989549126 1993 17.09293213744 1994 16.6126362816647 1995 16.1140715862377 1996 15.6418469840437 1997 15.2273325390879 1998 14.8597307216639 1999 14.5524755653652 2000 14.3188773923424 2001 14.1510389912856 2002 14.0275825380434 2003 13.9267199640084 2004 13.854710972014 2005 13.8521434614014 2006 13.8825521250434 2007 13.9076648038777 2008 13.9542426235704 2009 14.0138801562198 2010 14.0634384659988 2011 14.0866159881324 2012 14.0874630946884 2013 14.068128416467 2014 14.0158534773236 2015 13.9318508667495 2016 13.8454595933526 2017 13.7739488387927 2018 13.6981109520727 2019 13.611963655979 2020 13.5161515655412 2021 13.3957388957973 2022 13.2002023922721 2023 12.9275011014944