Year % of female population 1960 13.9299088667722 1961 14.071716858687 1962 14.1977907456889 1963 14.3177189693301 1964 14.4710814772314 1965 14.665250524795 1966 14.8505182737223 1967 15.0443167679023 1968 15.236382134636 1969 15.4209486616878 1970 15.6236200094506 1971 15.8362111082969 1972 16.0487481899064 1973 16.2631003769094 1974 16.4858891648496 1975 16.7147607447239 1976 16.9257477984192 1977 17.1342820615333 1978 17.3539483919633 1979 17.5444855586487 1980 17.6903002482414 1981 17.769022222754 1982 17.7543922737275 1983 17.6813749647941 1984 17.6962951788279 1985 17.8612094139259 1986 18.0619350956515 1987 18.2176979804127 1988 18.3134565414865 1989 18.3529072644267 1990 18.3733746275294 1991 18.3821731585789 1992 18.3710646159737 1993 18.3338178408048 1994 18.2962739988498 1995 18.2662843863405 1996 18.2197333243594 1997 18.1581673855066 1998 18.0742130998685 1999 17.9774203867614 2000 17.9023781043598 2001 17.8573056096955 2002 17.8188620315354 2003 17.7768232000836 2004 17.7418013575679 2005 17.7021740291416 2006 17.6553540311445 2007 17.6458875939044 2008 17.6951983843614 2009 17.8038650964836 2010 17.9436687405497 2011 18.1553455596003 2012 18.4684783115894 2013 18.7764316235791 2014 19.0262459726932 2015 19.2163963062499 2016 19.3678081460823 2017 19.5193459069972 2018 19.6819611098504 2019 19.8786254683183 2020 20.0658317975385 2021 20.2600373601146 2022 20.5112552135765 2023 20.7946585484532