Year % of female population 1960 0.679491140291064 1961 0.678401767153297 1962 0.675368149886102 1963 0.673325665528597 1964 0.676986812594935 1965 0.684483124777062 1966 0.696749186784454 1967 0.714555912278489 1968 0.728673728083026 1969 0.730563668605404 1970 0.720815862045015 1971 0.701372819821891 1972 0.673579889786265 1973 0.644323341521729 1974 0.621902571260336 1975 0.609172538041175 1976 0.601888918823543 1977 0.59878133653177 1978 0.602358055473159 1979 0.613265166108228 1980 0.637844816456513 1981 0.676438716714087 1982 0.720761951154358 1983 0.763589120856582 1984 0.799320414584375 1985 0.826635821550366 1986 0.842910459596333 1987 0.847478905042304 1988 0.846731504368143 1989 0.83105252077024 1990 0.808049770983289 1991 0.795893268671919 1992 0.785483591751373 1993 0.771997885430975 1994 0.756097021753657 1995 0.73655482152066 1996 0.714170059744391 1997 0.691094229523295 1998 0.673018248153293 1999 0.664497981652741 2000 0.663236334615181 2001 0.66613722039859 2002 0.672573365490675 2003 0.684447412597379 2004 0.703561935728169 2005 0.725495990414458 2006 0.749851110977925 2007 0.777612733032981 2008 0.805482326664263 2009 0.832964278826841 2010 0.855807995728272 2011 0.871180647458729 2012 0.877231902338228 2013 0.873478336737585 2014 0.866493718501441 2015 0.86336464545548 2016 0.866972938284335 2017 0.878416060151564 2018 0.893636703044509 2019 0.906685678812595 2020 0.909208642285097 2021 0.899074114437074 2022 0.87731219746859 2023 0.841519311955052