Year % of female population 1960 6.83142208867358 1961 7.08052418060298 1962 7.16591174157151 1963 7.23946505172849 1964 7.27973853135507 1965 7.62006683119663 1966 8.25189570577025 1967 8.83214575970062 1968 9.28767365719848 1969 9.56298714276197 1970 9.37632784098957 1971 8.83160033819363 1972 8.31576154501403 1973 7.89129314105191 1974 7.58694421734482 1975 7.45738295318127 1976 7.45478555434346 1977 7.45198660910933 1978 7.39419095924353 1979 7.32468804521941 1980 7.27776729028604 1981 7.24759685976625 1982 7.43391591144297 1983 7.89541683015762 1984 8.37447778199772 1985 8.7861238857662 1986 9.04731669872919 1987 8.91877476379153 1988 8.40547199294431 1989 7.73382681779628 1990 7.0779365033371 1991 6.45360090130863 1992 5.93065606209791 1993 5.48998026415667 1994 5.08853312213611 1995 5.04921278224978 1996 5.30113819639648 1997 5.49125584611745 1998 5.57258564737822 1999 5.5659798490009 2000 5.48256672948129 2001 5.47910024796316 2002 5.63590490743044 2003 5.85988057090322 2004 6.06803307387756 2005 6.24290885515155 2006 6.33498424133273 2007 6.27240466197107 2008 6.10621700985426 2009 5.90305911161526 2010 5.76126487920656 2011 5.70336682915316 2012 5.67462672937309 2013 5.6504285359961 2014 5.60193565069632 2015 5.49606430617751 2016 5.32691252893545 2017 5.11633107535197 2018 4.87998505650509 2019 4.63371455868716 2020 4.46076087058448 2021 4.37373320321297 2022 4.31446031581623 2023 4.30246855197201