Year % of female population 1960 0.507165986336505 1961 0.526593432074433 1962 0.556605230408677 1963 0.591199014371523 1964 0.625911627785105 1965 0.660944058792507 1966 0.699657966062059 1967 0.743947523612406 1968 0.796276079139446 1969 0.85851918290016 1970 0.874564387012679 1971 0.841434539428937 1972 0.808911659408077 1973 0.781795967882249 1974 0.767857600423645 1975 0.76699189246933 1976 0.776186462397657 1977 0.791863780064836 1978 0.811724163419319 1979 0.83752719229699 1980 0.866667251344027 1981 0.893058941197355 1982 0.918823304000329 1983 0.942218540947374 1984 0.959945709495657 1985 0.97353423052003 1986 0.986039921996182 1987 0.999111239800371 1988 1.00847639049492 1989 1.01487217499645 1990 1.01670706743604 1991 1.01939497731961 1992 1.02499479756757 1993 1.03101545642629 1994 1.04158260872213 1995 1.05516633830011 1996 1.07309472706184 1997 1.0882829430453 1998 1.10450399173195 1999 1.12005158790282 2000 1.13710539580487 2001 1.16648788607361 2002 1.20736243967233 2003 1.24907242573009 2004 1.29417852221789 2005 1.35254988913526 2006 1.4098471050321 2007 1.46338330222915 2008 1.51622100377193 2009 1.5782354355091 2010 1.64398406419126 2011 1.7023497750866 2012 1.76017472743679 2013 1.82028463902447 2014 1.88312112130623 2015 1.94848202717748 2016 2.01333415593264 2017 2.07650928470314 2018 2.1311632624106 2019 2.19846678245653 2020 2.2853222969612 2021 2.35847134104093 2022 2.44298960635604 2023 2.55481648415378