Year % of female population 1960 1.19448752919363 1961 1.22871234383324 1962 1.27251337961659 1963 1.30575844267928 1964 1.32788402220851 1965 1.34776910704712 1966 1.34891956869125 1967 1.33461500954291 1968 1.32942827835664 1969 1.32950854029131 1970 1.34054383426004 1971 1.37788029741601 1972 1.42670777988615 1973 1.47232645941635 1974 1.52797393325401 1975 1.58142446944019 1976 1.63518318456907 1977 1.70451067996817 1978 1.7770052148001 1979 1.82284111788028 1980 1.85642165542704 1981 1.88158946971716 1982 1.89306475233825 1983 1.9361646003693 1984 2.01665331990046 1985 2.12349511942024 1986 2.25752300936913 1987 2.40620034374291 1988 2.51070965895995 1989 2.55720368723972 1990 2.57147444965247 1991 2.57094983767934 1992 2.56338955764517 1993 2.56711541630545 1994 2.59751200471764 1995 2.64782605703116 1996 2.71036937478472 1997 2.77757502969338 1998 2.85464532206088 1999 2.93455462120192 2000 2.9792459159583 2001 2.97007326306273 2002 2.91643262809711 2003 2.84709668201105 2004 2.82997257322577 2005 2.89762865137654 2006 3.0495215650468 2007 3.28718976414367 2008 3.57504070255069 2009 3.85149437488043 2010 4.09104341615977 2011 4.28241520621872 2012 4.40813490733348 2013 4.49173724186464 2014 4.56048506537864 2015 4.61606131450194 2016 4.67255467435713 2017 4.74514694068417 2018 4.83701933729781 2019 4.94600225090395 2020 5.0557713849894 2021 5.16153800720572 2022 5.27432217840464 2023 5.38389948813402