Year % of female population 1960 1.5485987502197363 1961 1.604834344072712 1962 1.6537044970875274 1963 1.7013732180342511 1964 1.7508630016227467 1965 1.7845801323343675 1966 1.8130133058078863 1967 1.841305944131813 1968 1.872258027319097 1969 1.9106465806484072 1970 1.9662695381169444 1971 2.0329278477613486 1972 2.1031996428726694 1973 2.175128406866295 1974 2.2386652878451234 1975 2.3282550679810954 1976 2.4192662700055894 1977 2.4953060850311686 1978 2.572297658503482 1979 2.6405795279845172 1980 2.6748258744984246 1981 2.702244198965039 1982 2.756025503479034 1983 2.80628552295776 1984 2.8595649936471745 1985 2.9158926333004245 1986 2.9561285452893493 1987 2.992875499349715 1988 3.018193967596951 1989 3.0114889495064596 1990 2.9196166047934073 1991 2.7217915835155315 1992 2.4696852630444455 1993 2.2167196334852863 1994 2.1013524192935633 1995 2.1889485341340347 1996 2.4121495260992356 1997 2.714742950259652 1998 3.049233820750998 1999 3.300853942003263 2000 3.453455800694636 2001 3.567569325820246 2002 3.641985198249183 2003 3.691580874344686 2004 3.745044240920979 2005 3.803893411469869 2006 3.8615743257452384 2007 3.9215820493717515 2008 3.9612780029139256 2009 3.9766153717902406 2010 3.9840021325836887 2011 3.989841683960193 2012 3.997457389662493 2013 4.011608829444957 2014 4.037118493348109 2015 4.0529321091862265 2016 4.045527320539939 2017 4.014691588082147 2018 3.97593765697467 2019 3.947248817530184 2020 3.914740685110892 2021 3.95201214836027 2022 4.033958812255494 2023 4.200305256037022