Year % of female population 1960 26.1063412739101 1961 26.082842839177 1962 26.1246805784756 1963 26.1177875359038 1964 26.1599585224545 1965 26.2922570598359 1966 26.4214283846013 1967 26.513092021277 1968 26.5557272934424 1969 26.5922782797829 1970 26.592796479533 1971 26.5656239965049 1972 26.5003745496042 1973 26.3928348048414 1974 26.2760576762327 1975 26.1156010252038 1976 25.952305995566 1977 25.7832367728873 1978 25.528697474131 1979 25.1654758327046 1980 24.7459212940915 1981 24.2851271647856 1982 23.775792859048 1983 23.2679298401401 1984 22.750139669869 1985 22.2062433148222 1986 21.6307523245439 1987 21.0137457789579 1988 20.3688000057454 1989 19.6921521019878 1990 18.97293537407 1991 18.2576334055959 1992 17.5967030363797 1993 16.9703911977129 1994 16.3611414875572 1995 15.7959573947546 1996 15.2942552894975 1997 14.8599314272036 1998 14.492983342602 1999 14.2022936379109 2000 13.9927286058206 2001 13.8628819565123 2002 13.814028358745 2003 13.825224803553 2004 13.8416793543305 2005 13.8700888861002 2006 13.9408484987795 2007 14.0228838128641 2008 14.1339779900045 2009 14.2619664823213 2010 14.3654912242488 2011 14.4443799226567 2012 14.4890116740568 2013 14.503275651842 2014 14.4867602942277 2015 14.4423718589527 2016 14.3744337542632 2017 14.2803220122209 2018 14.1310798330735 2019 13.9220849764908 2020 13.6816194893228 2021 13.4102787658791 2022 13.1214134025277 2023 12.8087600956676