Year % of female population 1960 2.37505177654996 1961 2.33805045266766 1962 2.30895559349869 1963 2.28414112145421 1964 2.25924982719104 1965 2.26177863368435 1966 2.29604105488885 1967 2.34596234848194 1968 2.41741558420877 1969 2.50704123822813 1970 2.60425259600338 1971 2.66066272315275 1972 2.65741942386142 1973 2.63224861713194 1974 2.605433553736 1975 2.58439100103064 1976 2.5703307691702 1977 2.56522559939588 1978 2.56807928541663 1979 2.5786599183378 1980 2.59896349465678 1981 2.62520975861624 1982 2.65163553877121 1983 2.67122298695673 1984 2.66958386410658 1985 2.64596881336969 1986 2.61401272512174 1987 2.58045923295012 1988 2.55259839051928 1989 2.53540026983127 1990 2.52007037740466 1991 2.49707259953162 1992 2.46377064028426 1993 2.42362443933671 1994 2.38241444382108 1995 2.34310748402606 1996 2.31218749041382 1997 2.29554809560318 1998 2.29618862698731 1999 2.31635516976991 2000 2.35548863112705 2001 2.41702397967286 2002 2.51126251299521 2003 2.65560205350111 2004 2.85946759280033 2005 3.10710746628057 2006 3.37954197185845 2007 3.66734497640824 2008 3.96013431113847 2009 4.24997546461105 2010 4.52490508979756 2011 4.75551424057538 2012 4.92082974259873 2013 5.0757783351953 2014 5.19133026464214 2015 5.19894128554067 2016 5.14141471982247 2017 5.071818477261 2018 5.04379705966826 2019 5.03843760197868 2020 5.07208651458874 2021 5.15482784485121 2022 5.19200619962359 2023 5.19994602132158