Year % of female population 1960 1.07591660472569 1961 1.09901873074431 1962 1.1273972170732 1963 1.15043817955995 1964 1.18241530346088 1965 1.21019043289273 1966 1.22788420140314 1967 1.25409776466909 1968 1.2868441292664 1969 1.3211658828689 1970 1.34046747272137 1971 1.35778542546333 1972 1.38798693285684 1973 1.4273794136689 1974 1.47933379830386 1975 1.5381718970544 1976 1.60207830955813 1977 1.66774753870771 1978 1.7311927589491 1979 1.79832339287232 1980 1.87117673918877 1981 1.94012978659926 1982 2.00275534794977 1983 2.05480814945366 1984 2.10394740956343 1985 2.15183144320468 1986 2.19159788373415 1987 2.24032417800639 1988 2.31197738713848 1989 2.39428496736609 1990 2.46393862405637 1991 2.51294964002165 1992 2.56861700120302 1993 2.63245493795411 1994 2.69555115070806 1995 2.68925208233629 1996 2.57857680800934 1997 2.43436240421829 1998 2.28776608364352 1999 2.26533631381034 2000 2.36502526268764 2001 2.51112300233084 2002 2.70748558967685 2003 2.90543201893375 2004 3.08302587933111 2005 3.21994149541314 2006 3.3461379387456 2007 3.47438594028217 2008 3.60335124306277 2009 3.73713204908993 2010 3.8511513751534 2011 3.95329752218571 2012 4.05351692426334 2013 4.14035320210721 2014 4.21775187707053 2015 4.28263302556444 2016 4.33702882642756 2017 4.38688907506095 2018 4.44423242775706 2019 4.53377845267878 2020 4.63098352638127 2021 4.67909992944098 2022 4.53400787445912 2023 4.47875256406339