Year % of female population 1960 38.2408033225435 1961 39.6463245197911 1962 40.8904294392296 1963 41.9318329929376 1964 42.707915785088 1965 43.1085360684462 1966 43.2211479778025 1967 43.2193518747252 1968 43.1056119398879 1969 42.9298760028192 1970 42.7637430545502 1971 42.6045568518863 1972 42.4120122882117 1973 42.1674549811173 1974 41.8529206695647 1975 41.4606464757781 1976 41.0156094797699 1977 40.5434432803008 1978 40.1003397861415 1979 39.7551444825954 1980 39.5050019023312 1981 39.3246404050939 1982 39.2046944501382 1983 39.1510003067301 1984 39.1574505736139 1985 39.1875911738096 1986 39.2280902823602 1987 39.2525104156797 1988 39.2219764442377 1989 39.1715961964324 1990 39.1648619537496 1991 39.1558903590011 1992 39.0921016575292 1993 38.9823704180213 1994 38.8083570338899 1995 38.5674079817102 1996 38.2614676091621 1997 37.862993307958 1998 37.3386990031477 1999 36.6811820053739 2000 35.919747088017 2001 35.0770272417202 2002 34.1965089699805 2003 33.3222251587774 2004 32.4716880716063 2005 31.6283254355718 2006 30.7907953430721 2007 30.0357010182322 2008 29.4067330148733 2009 28.8877830685446 2010 28.4352757381561 2011 28.0375301367235 2012 27.7378019977563 2013 27.58508679587 2014 27.5791929725721 2015 27.6663841705107 2016 27.7935051769796 2017 27.9321973320676 2018 28.1450255873062 2019 28.4370499629876 2020 28.7593822460142 2021 29.0355699536609 2022 29.1590855142433 2023 29.134973060316