Year % of female population 1960 8.50698583028294 1961 8.572681894709 1962 8.95011235139756 1963 9.43052712112619 1964 9.60656514996269 1965 9.3713017525464 1966 8.82721191360596 1967 7.98015771435956 1968 6.87426412228849 1969 5.86119295617813 1970 5.18656783968181 1971 4.81537499049528 1972 4.81272670331658 1973 5.21769775322109 1974 5.8091229618887 1975 6.41596376532923 1976 6.99964629881744 1977 7.45669375691326 1978 7.83587243215302 1979 8.24751616034301 1980 8.66429162760217 1981 9.02803296560873 1982 9.38167327840167 1983 9.75826724471331 1984 10.0850561493449 1985 10.2909166696914 1986 10.3828323608639 1987 10.3463237637118 1988 10.1888153759331 1989 10.0463194195694 1990 9.80155619046012 1991 9.36619128089604 1992 8.85751052966385 1993 8.31184738068662 1994 7.81417527987675 1995 7.42002258672242 1996 7.16007864955661 1997 7.00263769209358 1998 6.91268049529231 1999 6.84541162027668 2000 6.80824000990294 2001 6.80407191826213 2002 6.77829616911438 2003 6.78026017451497 2004 6.8735809272947 2005 7.02022443943281 2006 7.19284389234518 2007 7.40807906927987 2008 7.68443657268372 2009 8.0225476652396 2010 8.38871046749904 2011 8.71390232982843 2012 8.99426464823556 2013 9.18755177880571 2014 9.27159367687395 2015 9.32566659927453 2016 9.38780346052672 2017 9.40118485489911 2018 9.23746223564955 2019 8.84050292592866 2020 8.24922334412162 2021 7.55958878443767 2022 6.870664709432 2023 6.28070875412066