Year % of female population 1960 19.2446704214523 1961 19.1849305747955 1962 19.1123457649287 1963 19.0322296182775 1964 18.9532061752644 1965 18.8824539405779 1966 18.8358432298384 1967 18.827591549636 1968 18.8607539163275 1969 18.9374009619724 1970 19.0577586629893 1971 19.2216161345589 1972 19.3935396006777 1973 19.5254915954277 1974 19.5994462580204 1975 19.6081830790569 1976 19.5336966421712 1977 19.3990460530705 1978 19.2504858690293 1979 19.0950105323094 1980 18.9238116377652 1981 18.7280623455924 1982 18.5194289580809 1983 18.3121938248839 1984 18.1203613506227 1985 17.9707296704417 1986 17.8684922562091 1987 17.8178894755342 1988 17.819929109179 1989 17.8569703073736 1990 17.9221917653965 1991 18.0108610803337 1992 18.0932055516359 1993 18.1568639426777 1994 18.2119853301382 1995 18.2508563656386 1996 18.2651004194432 1997 18.2478078962327 1998 18.1795596856176 1999 18.0500199979571 2000 17.8536288404078 2001 17.6137781395066 2002 17.3610729560282 2003 17.1169337348475 2004 16.8999937726091 2005 16.7247375767695 2006 16.5884495672349 2007 16.475981492916 2008 16.3768612606838 2009 16.2784093570789 2010 16.1615735454583 2011 15.9937596654401 2012 15.7742949761465 2013 15.5254706738287 2014 15.2541154279499 2015 14.986368232859 2016 14.773220305765 2017 14.618740810169 2018 14.4926386796425 2019 14.3831053669616 2020 14.2823287644764 2021 14.1674737882206 2022 14.0369433283323 2023 13.9061016221802