Year % of female population 1960 0.545559569084418 1961 0.543835357194886 1962 0.536139683294687 1963 0.531654463961304 1964 0.545926722232766 1965 0.580139296571686 1966 0.630969369586923 1967 0.697009583839837 1968 0.767102638811018 1969 0.825785728216814 1970 0.86939482548773 1971 0.900680016243916 1972 0.919987645621197 1973 0.932280274113392 1974 0.944607754034736 1975 0.958713374526439 1976 0.974779059380516 1977 0.992098533874427 1978 1.00678827301511 1979 1.01536701158289 1980 1.01689849131419 1981 1.01263438910457 1982 1.00317414027179 1983 0.990098153109052 1984 0.976119990706689 1985 0.962744082691496 1986 0.949907481992999 1987 0.936956874725618 1988 0.920848811188014 1989 0.899167945283206 1990 0.874218186124773 1991 0.852759002284905 1992 0.839485620905871 1993 0.828817978257449 1994 0.8146416200347 1995 0.796470706189183 1996 0.775564072519608 1997 0.751197645813167 1998 0.72595446253926 1999 0.704998285315206 2000 0.689882513198182 2001 0.678836531825208 2002 0.671039642530858 2003 0.666010616387385 2004 0.662871851246095 2005 0.661486038012634 2006 0.661761756333214 2007 0.663405012405766 2008 0.665627064663939 2009 0.667082559581618 2010 0.667686049420977 2011 0.667354809266461 2012 0.666211827268049 2013 0.665352582156392 2014 0.665805838642642 2015 0.667389640818265 2016 0.670785586671179 2017 0.677307647941754 2018 0.685813774837875 2019 0.694966393808273 2020 0.698994129939473 2021 0.699584618900907 2022 0.700557240767105 2023 0.711468230195159