Year % of female population 1960 4.36585150841115 1961 4.3762358042756 1962 4.37720016011262 1963 4.37044435892793 1964 4.35870293304025 1965 4.34299231039706 1966 4.32312102202061 1967 4.29936216046131 1968 4.27166323104058 1969 4.24012186337058 1970 4.20508614286507 1971 4.1674295579647 1972 4.12765895739271 1973 4.08465845727045 1974 4.03785137220243 1975 3.98813644945237 1976 3.93669156091556 1977 3.88411614565355 1978 3.83197306260434 1979 3.78276112080086 1980 3.73815749138717 1981 3.70109897991272 1982 3.67378708528063 1983 3.65396117240487 1984 3.63639223454271 1985 3.61873394052985 1986 3.60144756947657 1987 3.58599432339745 1988 3.57663168426008 1989 3.57689853469769 1990 3.58453872983764 1991 3.59026753267949 1992 3.57720962531572 1993 3.51099344077078 1994 3.40317031869697 1995 3.29944544065095 1996 3.21158552715554 1997 3.14808956973796 1998 3.13608418584489 1999 3.16346795399464 2000 3.19190152841045 2001 3.21582187485987 2002 3.23735397610619 2003 3.25627167444522 2004 3.27367032086664 2005 3.28840785120965 2006 3.29907340681224 2007 3.30654100504189 2008 3.31040804453668 2009 3.31153443127066 2010 3.31161011219116 2011 3.31046458655238 2012 3.30856150143359 2013 3.30794157902303 2014 3.30729599559081 2015 3.30615345388097 2016 3.30812039824196 2017 3.31622413349491 2018 3.33235856407212 2019 3.35978438036088 2020 3.40082531282672 2021 3.45365629857423 2022 3.51812154916649 2023 3.59383800059686