Year % of female population 1960 0.925269408949832 1961 0.88757300569916 1962 0.851758870855171 1963 0.817205393705988 1964 0.78389562187234 1965 0.751505290529324 1966 0.720049461376033 1967 0.690021212445159 1968 0.661508724800645 1969 0.633952849025241 1970 0.607635549282169 1971 0.582836457223886 1972 0.559216668330733 1973 0.537808843083799 1974 0.519806732279054 1975 0.506201870433862 1976 0.498294633650049 1977 0.493729286476839 1978 0.490483172391116 1979 0.488086996906738 1980 0.485276624835867 1981 0.480680842182021 1982 0.473436293675655 1983 0.467200089242323 1984 0.46439491062757 1985 0.462498005643547 1986 0.46090208113921 1987 0.4600356411524 1988 0.459553949589169 1989 0.459112436035962 1990 0.458247069425727 1991 0.457099784128145 1992 0.455486695655197 1993 0.453050160505198 1994 0.449954894577222 1995 0.446849750674023 1996 0.444083176464859 1997 0.44192353158976 1998 0.44092483932782 1999 0.442096354516528 2000 0.446546607755227 2001 0.45527132392526 2002 0.467395392102035 2003 0.481814205482604 2004 0.496727352875413 2005 0.511611150499713 2006 0.521104311103263 2007 0.525022236181352 2008 0.542752002146082 2009 0.570596776658445 2010 0.594790853762703 2011 0.62088736852083 2012 0.65578709094 2013 0.712916635784777 2014 0.777795689135472 2015 0.822290222822053 2016 0.842740115774044 2017 0.855607147935966 2018 0.857566635473211 2019 0.843553435866301 2020 0.837275231258173 2021 0.835376063686679 2022 0.833879465670066 2023 0.833739238275525