Year % of female population 1960 0.623930696446037 1961 0.621320123816858 1962 0.617156680362604 1963 0.61325501118974 1964 0.6063119598653 1965 0.59762341182233 1966 0.589478224948547 1967 0.581843266862022 1968 0.576081904779067 1969 0.575696436371008 1970 0.580078504180716 1971 0.587608992650049 1972 0.599291248789114 1973 0.61205685188715 1974 0.621468776126397 1975 0.628309054898409 1976 0.632943486624454 1977 0.634189781820805 1978 0.632575738321711 1979 0.632247906636546 1980 0.627414716631236 1981 0.623105121237312 1982 0.623751229321082 1983 0.623559431087171 1984 0.623227749335219 1985 0.622537427917816 1986 0.62105260694671 1987 0.616062201954214 1988 0.607108953098553 1989 0.596609675601383 1990 0.585557632459114 1991 0.573333518604933 1992 0.558506744494394 1993 0.55620752496063 1994 0.546663020955386 1995 0.527416409701701 1996 0.521171351659453 1997 0.517013995380617 1998 0.511276429513956 1999 0.506019396932208 2000 0.501642944271056 2001 0.496855160032943 2002 0.492156145661504 2003 0.487153200192396 2004 0.481565430446974 2005 0.476556018703261 2006 0.472409617802403 2007 0.468789907761544 2008 0.465380420492596 2009 0.46100795761993 2010 0.457069051619945 2011 0.455346432559317 2012 0.454930320114086 2013 0.455552166553716 2014 0.457023612697671 2015 0.460500406990189 2016 0.464838079127833 2017 0.468396219492182 2018 0.471306651403203 2019 0.474127840871089 2020 0.475841282235559 2021 0.475169663325488 2022 0.472740862891356 2023 0.470574410540098