Year % of female population 1960 1.30958355724888 1961 1.27848670699661 1962 1.22794258900285 1963 1.17323772327221 1964 1.13555175950188 1965 1.12407772075302 1966 1.1333861540064 1967 1.15903321634388 1968 1.19910726233943 1969 1.25248660582204 1970 1.3155051636346 1971 1.38871120608882 1972 1.47689177844584 1973 1.57847790715815 1974 1.68163501562349 1975 1.7767066669986 1976 1.85735065015373 1977 1.92068236928548 1978 1.97512252960793 1979 2.03262889777104 1980 2.09829817911674 1981 2.17187553367425 1982 2.24283431567147 1983 2.29848850176362 1984 2.33521148277066 1985 2.35222093490516 1986 2.35246681589827 1987 2.34342350934281 1988 2.33555757213658 1989 2.33586914163814 1990 2.34223888591323 1991 2.35089310144728 1992 2.35922274652728 1993 2.36478012521328 1994 2.37600113867085 1995 2.40062390859636 1996 2.43892255730003 1997 2.48926837389742 1998 2.5440358973059 1999 2.59669714148957 2000 2.64083999335738 2001 2.67072824333808 2002 2.6997206239175 2003 2.73990053629585 2004 2.77755811356635 2005 2.81567512095053 2006 2.88507929110566 2007 2.9766441452928 2008 3.07044803533398 2009 3.18329847918339 2010 3.31876144974248 2011 3.43061820697491 2012 3.53781085483646 2013 3.65936120842382 2014 3.7606714103664 2015 3.84620997096981 2016 3.94411440877377 2017 4.04867581973629 2018 4.13564409384538 2019 4.1974701386476 2020 4.24832156906902 2021 4.28876144012631 2022 4.33772245564516 2023 4.42902548661871