Year % of female population 1960 0.497476947902161 1961 0.482739117103916 1962 0.464119474099408 1963 0.447455346531924 1964 0.440597496180211 1965 0.444010114605549 1966 0.455714469889875 1967 0.474805486310282 1968 0.497187370605062 1969 0.517410867620125 1970 0.533652223423079 1971 0.54769913519205 1972 0.559683912428831 1973 0.570872581885545 1974 0.583683651614963 1975 0.59716318496955 1976 0.610010851925363 1977 0.621613396787119 1978 0.629426208391637 1979 0.630261817890889 1980 0.623720096689148 1981 0.61170008151554 1982 0.594542549649202 1983 0.572790229023217 1984 0.548471001744596 1985 0.52331059815558 1986 0.498064999268337 1987 0.474420072540794 1988 0.455122312831807 1989 0.443066865416408 1990 0.439929631421889 1991 0.444975742856897 1992 0.456988058446448 1993 0.476198342420312 1994 0.503377590717987 1995 0.537339530034034 1996 0.576690468175735 1997 0.620295163197624 1998 0.666140361417604 1999 0.711846382443026 2000 0.755769415933665 2001 0.798837649353405 2002 0.841935907366007 2003 0.882883011839743 2004 0.917350887881711 2005 0.946344933547254 2006 0.971939593679807 2007 0.991851707842403 2008 1.00641250195816 2009 1.01686874553096 2010 1.0223296029187 2011 1.02832030453987 2012 1.04442781906837 2013 1.06798801420506 2014 1.09159519941127 2015 1.11955565189219 2016 1.16096126945258 2017 1.21054580955453 2018 1.25533409367646 2019 1.29803262244709 2020 1.34421587832599 2021 1.38950133484628 2022 1.43158760916235 2023 1.47570997308089