Year % of female population 1960 0.348378360058257 1961 0.344494858276039 1962 0.332976080595343 1963 0.32193153162488 1964 0.310958882923056 1965 0.300305853700978 1966 0.29036599241898 1967 0.280969592660341 1968 0.27297668062232 1969 0.26825212805602 1970 0.264801212860999 1971 0.264676523414929 1972 0.270348268331311 1973 0.277972237293584 1974 0.284644695998067 1975 0.289040987352645 1976 0.291381584556319 1977 0.292010583476441 1978 0.29128670783264 1979 0.289474228311603 1980 0.286625465731861 1981 0.282932828099446 1982 0.278500110305351 1983 0.272832063602908 1984 0.266380134110474 1985 0.260031616257894 1986 0.253670204342988 1987 0.246727458217006 1988 0.239660781760444 1989 0.233468500974816 1990 0.228075930949801 1991 0.224082378947968 1992 0.220799467440954 1993 0.218015809223142 1994 0.216576391201296 1995 0.215899088652927 1996 0.215687882764654 1997 0.215997317440939 1998 0.21645632505361 1999 0.217149104942908 2000 0.218231445125896 2001 0.219802977869164 2002 0.221870244926304 2003 0.224916639894104 2004 0.229622358046395 2005 0.235719165975928 2006 0.243201602751713 2007 0.25222278598153 2008 0.262294549064989 2009 0.273147013129992 2010 0.284813902897023 2011 0.296981740893814 2012 0.309692251644726 2013 0.322698269723222 2014 0.335830440782137 2015 0.348994338013833 2016 0.361524133323314 2017 0.373345643706883 2018 0.38452646014688 2019 0.393865741737619 2020 0.399349783760436 2021 0.399088199494823 2022 0.395822464782004 2023 0.39557042851055