Year % of female population 1960 16.3161285680647 1961 16.3562111930658 1962 16.4243460796159 1963 16.5205903202939 1964 16.6363624099304 1965 16.7632020276816 1966 16.8942457054094 1967 17.0160819120225 1968 17.1324437654401 1969 17.2484672640812 1970 17.360250038428 1971 17.4716761307765 1972 17.5819499717122 1973 17.6923835531522 1974 17.7948644874462 1975 17.8748444542765 1976 17.9499920410595 1977 17.9886413994902 1978 18.0653367251305 1979 18.026820039843 1980 17.8402538516867 1981 17.6768736977992 1982 17.3537054860443 1983 16.9245102812839 1984 16.6022280054125 1985 16.3685917729914 1986 16.1958733374816 1987 16.1411306780285 1988 16.1466926353489 1989 15.9275337806093 1990 15.9027419692995 1991 16.2330727702942 1992 16.4828837109833 1993 16.5881893768562 1994 16.5287639955381 1995 16.217742110977 1996 15.7036319293699 1997 15.1733306907508 1998 14.7158447907392 1999 14.3524800405594 2000 14.071429408687 2001 13.85507034495 2002 13.6590199622114 2003 13.4287710911706 2004 13.1720005202133 2005 12.9494344121193 2006 12.8041744653859 2007 12.7465893941549 2008 12.7759794768577 2009 12.8716848149327 2010 13.0049963652308 2011 13.1605367883557 2012 13.3175585622738 2013 13.4375786352025 2014 13.5031573387738 2015 13.5162919135829 2016 13.4739301166388 2017 13.3717781312179 2018 13.2263753279711 2019 13.054206366801 2020 12.8666051750085 2021 12.6857117101081 2022 12.5184331502376 2023 12.3447699750504