Year % of female population 1960 0.417617487939733 1961 0.423319000343065 1962 0.428727151683194 1963 0.433866176237249 1964 0.438606003155137 1965 0.442926466719577 1966 0.447040033879523 1967 0.450987333837438 1968 0.454740065542669 1969 0.458276498404223 1970 0.461553041886919 1971 0.464873297314873 1972 0.4684854072709 1973 0.472236036021413 1974 0.475820095297512 1975 0.479150903233924 1976 0.482065499734303 1977 0.484509073083561 1978 0.487272210021104 1979 0.489903449397854 1980 0.492934805139705 1981 0.495285675255231 1982 0.493790137394898 1983 0.492426561615667 1984 0.493452563278196 1985 0.494508741307491 1986 0.495186766657874 1987 0.495345849852913 1988 0.495207422560428 1989 0.495035239154025 1990 0.494976586441048 1991 0.494852343435833 1992 0.494732962217593 1993 0.494843253344414 1994 0.495079981639132 1995 0.495370949214703 1996 0.495845079333167 1997 0.496432792057702 1998 0.496894229127771 1999 0.497450267800193 2000 0.498052897346491 2001 0.498383594797517 2002 0.498416056484491 2003 0.497869976236437 2004 0.49670396802862 2005 0.495117711478922 2006 0.493184656099056 2007 0.491104833334287 2008 0.488891798643828 2009 0.486406133982191 2010 0.483749611405383 2011 0.481035047471947 2012 0.478457212760115 2013 0.476058356680968 2014 0.474209201659696 2015 0.47219214091999 2016 0.469604720465725 2017 0.467048595734153 2018 0.464736508164717 2019 0.462367035004618 2020 0.456027108397333 2021 0.444137736496074 2022 0.431288861228667 2023 0.422208564720723