Year % of female population 1960 2.72519670754493 1961 2.60974255168332 1962 2.51204730070883 1963 2.43706611584642 1964 2.39402513318549 1965 2.38622345213883 1966 2.40865385405995 1967 2.45613067348502 1968 2.52505446274364 1969 2.60853224858985 1970 2.69367602152327 1971 2.7850093934882 1972 2.88770368624216 1973 2.97857422545903 1974 3.02325015281918 1975 3.01932507683098 1976 2.96903121089682 1977 2.87292726431922 1978 2.76245334607104 1979 2.67702267043718 1980 2.62802166939969 1981 2.61036396421976 1982 2.62418732030011 1983 2.65583973904203 1984 2.68266637037586 1985 2.69470271171419 1986 2.69624937434871 1987 2.68975474461111 1988 2.67504262985651 1989 2.65249062151663 1990 2.62230270821983 1991 2.58196324496922 1992 2.53567291999071 1993 2.49030538051381 1994 2.44948926484537 1995 2.41706258946959 1996 2.3937365918498 1997 2.3767838128211 1998 2.3666343469476 1999 2.40338435053283 2000 2.48795335214005 2001 2.58209225416477 2002 2.69162704350566 2003 2.81621381093491 2004 2.91660958373816 2005 2.98941935483871 2006 3.064087336404 2007 3.14458455898281 2008 3.2267632053811 2009 3.30506943449359 2010 3.37663875552557 2011 3.43525822277836 2012 3.47776214274439 2013 3.51606545151066 2014 3.56079350969108 2015 3.6135977395202 2016 3.67385265136491 2017 3.73793382518005 2018 3.79688266960643 2019 3.84488900311449 2020 3.88456486577436 2021 3.91748455772846 2022 3.95636013515696 2023 4.01712946940235