Year % of female population 1960 14.0122742151691 1961 14.3075880982669 1962 14.587110195309 1963 14.8336872384848 1964 15.1036030502797 1965 15.3660947176887 1966 15.6160952835767 1967 15.8695372812275 1968 16.1046961297123 1969 16.3260289067715 1970 16.5256362263126 1971 16.7243385838755 1972 16.934206957869 1973 17.155994949999 1974 17.4211456238689 1975 17.7171044673924 1976 17.9587656783725 1977 18.1820538529185 1978 18.4099818422166 1979 18.6029404933398 1980 18.6213656365536 1981 18.3607003464113 1982 18.0001926599084 1983 17.6484415726282 1984 17.4710998621389 1985 17.5807968961344 1986 17.8359739171457 1987 18.1382659150659 1988 18.4340546542212 1989 18.6605743489105 1990 18.7965304400849 1991 18.8164879195913 1992 18.7352796433303 1993 18.6673799283526 1994 18.6682330286219 1995 18.7006981312952 1996 18.7164499510068 1997 18.7190691656888 1998 18.711788876187 1999 18.6644916197005 2000 18.5969299774175 2001 18.5393799687767 2002 18.4567307796276 2003 18.3812229528507 2004 18.5584666434127 2005 18.964873311508 2006 19.3630004710316 2007 19.642688796509 2008 19.8295176482968 2009 20.0204366554187 2010 20.0924487019249 2011 20.1191297209016 2012 20.2821256333946 2013 20.4896109256789 2014 20.6505654841755 2015 20.7144328346776 2016 20.741855931453 2017 20.8182538927402 2018 20.9366618366198 2019 21.0909528530805 2020 21.2946931391467 2021 21.5836493343646 2022 21.939148292023 2023 22.321718836952