Year % of female population 1960 19.29972307958 1961 19.167317274454 1962 19.044157836506 1963 18.9417869530858 1964 18.8649763065085 1965 18.8230458249512 1966 18.822656669189 1967 18.8577843751488 1968 18.9251584565986 1969 19.0103362239522 1970 19.1034355716097 1971 19.1836563844114 1972 19.2526072408974 1973 19.2985630684964 1974 19.274331173553 1975 19.2154171393058 1976 19.1514209142873 1977 19.0663062450388 1978 18.9655822900442 1979 18.9069214875955 1980 18.8663300017951 1981 18.7970472275913 1982 18.7430224015354 1983 18.7259405380226 1984 18.7366100364626 1985 18.8237697891921 1986 18.9872492015029 1987 19.1791225073174 1988 19.3871189537626 1989 19.5791465236385 1990 19.7387226649758 1991 19.8453586931829 1992 19.9022635745338 1993 19.9410928311044 1994 19.9779072552362 1995 20.0804396225515 1996 20.1352993051336 1997 20.1057453952116 1998 20.0230835331286 1999 19.8861896995545 2000 19.7645044906788 2001 19.6801658920464 2002 19.6161062873157 2003 19.5566682639958 2004 19.5214471307532 2005 19.4732873694728 2006 19.3918727557082 2007 19.2748618243943 2008 19.1295463075879 2009 18.9655750832873 2010 18.7989633153962 2011 18.631173161254 2012 18.4563725675847 2013 18.2730863351724 2014 18.0523793268624 2015 17.7868148407395 2016 17.4788040391164 2017 17.1704449018482 2018 16.9198720585272 2019 16.7161407928868 2020 16.5538978955974 2021 16.4281108307556 2022 16.3166057422192 2023 16.1853347232641