Year % of female population 1960 19.2290725753173 1961 19.1795755140476 1962 19.1366095047544 1963 19.0971614994568 1964 19.0596270534804 1965 19.0255498223313 1966 18.9933433749784 1967 18.963451093415 1968 18.9423081777454 1969 18.9339718229869 1970 18.9537403130676 1971 18.9929346907217 1972 19.0328852810355 1973 19.0815014224088 1974 19.1324333182154 1975 19.1902196195982 1976 19.2475844835277 1977 19.31503991092 1978 19.4220305225788 1979 19.3776495310413 1980 18.7674401939282 1981 18.28090773702 1982 18.2930424713708 1983 18.4308357964585 1984 18.5929769572009 1985 18.5804435944826 1986 18.323237855495 1987 17.9500842314947 1988 17.5008405462519 1989 16.8538415492578 1990 16.1537566666581 1991 15.543690269068 1992 15.1170747333524 1993 14.8007681956575 1994 14.4932522080043 1995 14.2314808334311 1996 14.0371555959996 1997 13.9525531420653 1998 13.9773044124511 1999 14.1245972946925 2000 14.3855188521103 2001 14.6987234842214 2002 14.9662198275681 2003 15.1417119706361 2004 15.2159013290108 2005 15.1844019379221 2006 15.0547963350092 2007 14.9072385032744 2008 14.8194154516035 2009 14.818871833276 2010 14.9161893089454 2011 15.0851588197013 2012 15.2558304998454 2013 15.352441461709 2014 15.323815754607 2015 15.1558210160061 2016 14.8944367043748 2017 14.5864260034015 2018 14.2712540506389 2019 13.9788920271765 2020 13.7288773607265 2021 13.5198640304569 2022 13.3327927992032 2023 13.1456145006328