Year % of female population 1960 37.86104127062 1961 36.4416425882147 1962 36.74631804497 1963 36.9038607115821 1964 37.0382562486774 1965 37.1983314041103 1966 37.2247678520741 1967 37.0579674535523 1968 36.7117954163348 1969 36.1801345679835 1970 36.2431739137277 1971 36.8497559962621 1972 37.2386923796623 1973 37.3706264127001 1974 37.2756430413182 1975 37.1776710684274 1976 37.107423781363 1977 36.8502775085895 1978 36.2466777496585 1979 35.3093020171205 1980 34.3520551619986 1981 33.5127939074767 1982 32.7601048447157 1983 32.1233407661904 1984 31.5229775921003 1985 30.8843846401332 1986 30.2682827440463 1987 29.7565528802194 1988 29.4181933220212 1989 29.2534119824196 1990 29.1819999420475 1991 29.2164585118778 1992 29.306273838771 1993 29.371299529376 1994 29.3479285700816 1995 28.8730553013466 1996 28.0964010875075 1997 27.3643791741734 1998 26.5837236270799 1999 25.7578856568639 2000 25.08515363042 2001 24.5235565001771 2002 23.8859670942753 2003 23.2119107762891 2004 22.532252417248 2005 21.8479298359357 2006 21.1841512832058 2007 20.6041828040279 2008 20.1165576753319 2009 19.7419831109671 2010 19.4090732702217 2011 19.0590307090402 2012 18.7470891740103 2013 18.5037525606519 2014 18.3397362491227 2015 18.2349178093622 2016 18.1598445619939 2017 18.1014321254531 2018 18.040534229943 2019 17.9522484802503 2020 17.8993070207519 2021 17.8289918174311 2022 17.7079311870886 2023 17.5598221885936