Year % of female population 1960 0.397998019246404 1961 0.420586336803357 1962 0.441515983830031 1963 0.46197852525985 1964 0.482669192091402 1965 0.503095730619511 1966 0.522059069318077 1967 0.53897196770353 1968 0.553454792537929 1969 0.565461074524664 1970 0.575831836956131 1971 0.585921856554568 1972 0.596327853971993 1973 0.607046710531646 1974 0.61777518781431 1975 0.628552474171985 1976 0.638981275811498 1977 0.647176207891633 1978 0.652874382167171 1979 0.657564361951367 1980 0.661966080146326 1981 0.664226629493918 1982 0.665414916233525 1983 0.668456123001578 1984 0.67223956583586 1985 0.675749351004014 1986 0.679124329826835 1987 0.683359038906842 1988 0.690003702099645 1989 0.697357385014273 1990 0.704634419531471 1991 0.713078859765226 1992 0.720665453946642 1993 0.72659396125543 1994 0.732954035680094 1995 0.741094461301571 1996 0.750184112783059 1997 0.759479422587912 1998 0.767501281379416 1999 0.7738041313226 2000 0.780964166080705 2001 0.789443495578119 2002 0.798379705509106 2003 0.805409942724456 2004 0.810392318651861 2005 0.815880139050221 2006 0.821819616460044 2007 0.827251599066208 2008 0.832288401234979 2009 0.837226263778595 2010 0.841611025662047 2011 0.846514992560118 2012 0.851678873437986 2013 0.854587760117413 2014 0.855304082726329 2015 0.851542455244978 2016 0.846221052353864 2017 0.843678925856197 2018 0.837930617258257 2019 0.82379581204124 2020 0.80351764218139 2021 0.77821719243128 2022 0.752702360206739 2023 0.738654158786707