Year % of female population 1960 0.689632679201759 1961 0.67537208322372 1962 0.654793901240516 1963 0.634643105575306 1964 0.625125147933488 1965 0.627190715728731 1966 0.639663931997769 1967 0.663487171031074 1968 0.691964949767562 1969 0.715460693900914 1970 0.732825269048391 1971 0.743955848227651 1972 0.750779533431098 1973 0.761092391432409 1974 0.784651806302844 1975 0.824880914649664 1976 0.878147607531379 1977 0.944621234643146 1978 1.01748858472552 1979 1.08530531026416 1980 1.14614906998956 1981 1.19949751537329 1982 1.24380478047499 1983 1.28365072185684 1984 1.32039495882751 1985 1.34981074153991 1986 1.38157182326772 1987 1.42343413870287 1988 1.47050132615505 1989 1.51869510420686 1990 1.57294954673071 1991 1.63168439547748 1992 1.70428673798729 1993 1.77635788776849 1994 1.83285328553823 1995 1.85049129889162 1996 1.80696188259519 1997 1.7643306104136 1998 1.74623584946812 1999 1.77580719149624 2000 1.85210185941263 2001 1.9654616440116 2002 2.10198964472956 2003 2.26712777951192 2004 2.47358420285823 2005 2.68569352908754 2006 2.90266634685869 2007 3.09742930710231 2008 3.2475541774817 2009 3.37772802792437 2010 3.48535255841262 2011 3.55960195807581 2012 3.61694286865878 2013 3.73530571140066 2014 3.89309122336769 2015 4.04263850330651 2016 4.22016916847379 2017 4.40877988863039 2018 4.58447562493045 2019 4.74166633737412 2020 4.85443056373784 2021 4.86923127177635 2022 4.74233460487144 2023 4.55826861598142