Year % of female population 1960 0.46857404364944 1961 0.451006685600048 1962 0.434737508565953 1963 0.421572722598852 1964 0.416146609326882 1965 0.418712765578972 1966 0.427480349538346 1967 0.441817536435738 1968 0.45842298394877 1969 0.471396690799021 1970 0.479337429814812 1971 0.482962530673545 1972 0.481142342345794 1973 0.475383531265983 1974 0.468023569211324 1975 0.459319242950024 1976 0.449223095653813 1977 0.438096178794314 1978 0.426522353330079 1979 0.415459849385218 1980 0.405041130892416 1981 0.395147884819078 1982 0.385717580621841 1983 0.376259369442379 1984 0.367614513053226 1985 0.360636951927327 1986 0.355163253619981 1987 0.350312775954937 1988 0.345892382575119 1989 0.342194118380383 1990 0.338804880118888 1991 0.336905945167973 1992 0.335627050123328 1993 0.334759563817364 1994 0.33559407279529 1995 0.337575463125093 1996 0.340154746281715 1997 0.343287945352712 1998 0.347089099513146 1999 0.352744950155874 2000 0.360581326168233 2001 0.370671704325837 2002 0.383138108238479 2003 0.39758610912923 2004 0.413220716143078 2005 0.429068557814411 2006 0.444975619074709 2007 0.460576236294423 2008 0.475687801884691 2009 0.49059922640956 2010 0.5049002493308 2011 0.517899450967005 2012 0.529675545490014 2013 0.538891849448471 2014 0.544209066370715 2015 0.5458144418282 2016 0.543632327501209 2017 0.538476401648169 2018 0.532491721416288 2019 0.526656002396498 2020 0.520688041347314 2021 0.513448599058605 2022 0.505933350466508 2023 0.49982326213222