Year % of female population 1960 17.7667889933708 1961 17.9344093511449 1962 18.0917257071134 1963 18.2097025553841 1964 18.2855950858851 1965 18.3180230147479 1966 18.3105353796977 1967 18.275159541538 1968 18.2154426537945 1969 18.1273160149206 1970 18.0213881935079 1971 17.9003093955976 1972 17.7940610206269 1973 17.7241338597118 1974 17.6743801430845 1975 17.6328088619579 1976 17.5875625241812 1977 17.5396177405911 1978 17.4995843458157 1979 17.4605401860079 1980 17.3921077158058 1981 17.3563664240691 1982 17.4333420338141 1983 17.6034088057798 1984 17.8127357470759 1985 17.9597014458559 1986 18.019704734967 1987 18.0299548530488 1988 18.0020998960457 1989 17.9621959334357 1990 17.9072496753366 1991 17.817746548639 1992 17.7523264064625 1993 17.6190836989788 1994 17.3793895754453 1995 17.105475235586 1996 16.8001753318408 1997 16.4932132151851 1998 16.2120256304844 1999 15.9632070786494 2000 15.6970601558779 2001 15.4476071500705 2002 15.281447612165 2003 15.1409726604091 2004 14.9694105603628 2005 14.7844548075218 2006 14.5881052888325 2007 14.4023001270836 2008 14.2544927333913 2009 14.144748491951 2010 14.0812564478856 2011 14.0636879960963 2012 14.0613838976784 2013 14.0471292011471 2014 13.9953188309848 2015 13.8675178433581 2016 13.6784461465057 2017 13.4559947125198 2018 13.2126895442959 2019 12.9854229533974 2020 12.7920421030942 2021 12.6195837050766 2022 12.4549747395439 2023 12.2983381397686