Year % of female population 1960 25.6183159998025 1961 25.2311107232656 1962 24.8000147147184 1963 24.3523894337598 1964 23.9003921288277 1965 23.5146972774618 1966 23.2037856446067 1967 22.9284976714846 1968 22.7408776825694 1969 22.6560445107707 1970 22.5727226961428 1971 22.452067123689 1972 22.326010134571 1973 22.2366519043681 1974 22.2234568418947 1975 22.2181575762196 1976 22.1758658192307 1977 22.1339693490331 1978 22.0696348192378 1979 21.9650162860222 1980 21.8432266001879 1981 21.7093844769663 1982 21.5709439962363 1983 21.3597296509719 1984 21.0672170763876 1985 20.7956142389966 1986 20.5747814334596 1987 20.3945744875693 1988 20.1900549701677 1989 19.8903695537875 1990 19.5345454820746 1991 19.1395873915353 1992 18.688856811973 1993 18.2197859360338 1994 17.7325077478159 1995 17.2304960353406 1996 16.7497866005672 1997 16.2649317145728 1998 15.7634194681726 1999 15.3013935034182 2000 14.895390998011 2001 14.4874876728058 2002 14.0757298168614 2003 13.6876678477953 2004 13.3336940200957 2005 13.0518113272 2006 12.8770203686456 2007 12.8117151501968 2008 12.8187375926032 2009 12.8930342571616 2010 13.0162805052236 2011 13.123900642131 2012 13.2393454591585 2013 13.3504646718992 2014 13.366698393209 2015 13.3225434483572 2016 13.298097084539 2017 13.3021130254594 2018 13.2977636690807 2019 13.2645164310393 2020 13.2200802109911 2021 13.1933498641201 2022 13.1970968456695 2023 13.1767855994549