Year % of female population 1960 1.31040277531128 1961 1.33778200198043 1962 1.36270568938727 1963 1.38658030216795 1964 1.4120832411824 1965 1.44015355816631 1966 1.47052155735053 1967 1.50344941009136 1968 1.53706203134647 1969 1.56880479836118 1970 1.59799972671344 1971 1.62464983072072 1972 1.64773682069007 1973 1.66795365503302 1974 1.6878327613432 1975 1.70768092018927 1976 1.72700908268037 1977 1.74482731981992 1978 1.7596587690758 1979 1.77011236543955 1980 1.77521593901851 1981 1.77548425181646 1982 1.77146442195106 1983 1.76366039759389 1984 1.75342816059003 1985 1.74132609865144 1986 1.72711550973461 1987 1.7110172138645 1988 1.6930440031093 1989 1.67325651014115 1990 1.65239175943983 1991 1.6317087313321 1992 1.6108187499872 1993 1.58856957025822 1994 1.56536311434784 1995 1.54211818230563 1996 1.51949512644962 1997 1.49731224258157 1998 1.47554261504738 1999 1.4555806928445 2000 1.43849761428844 2001 1.424711950557 2002 1.41448488238161 2003 1.40699218684197 2004 1.40034548978257 2005 1.39414697433946 2006 1.38847954213716 2007 1.38400424013818 2008 1.38290457576328 2009 1.38585832701144 2010 1.39137764224916 2011 1.39585389246108 2012 1.39228315506726 2013 1.36671227425483 2014 1.3251851306076 2015 1.28763041030109 2016 1.25871658759691 2017 1.24098814234009 2018 1.24383161454987 2019 1.26187011825384 2020 1.27777385177162 2021 1.28807646826606 2022 1.296787660444 2023 1.30739426123731