Year % of female population 1960 3.66109766289156 1961 3.67878275273919 1962 3.6882268994454 1963 3.68572601127295 1964 3.68246197171218 1965 3.68893973896842 1966 3.70680512219788 1967 3.73673443533316 1968 3.76984271821698 1969 3.79384939444805 1970 3.80256543463178 1971 3.80396710781567 1972 3.79574173401019 1973 3.77432405617973 1974 3.74914060347631 1975 3.74611324923019 1976 3.76255179408382 1977 3.78698809914143 1978 3.82393935554246 1979 3.86833280191758 1980 3.92162547964086 1981 3.9789161240423 1982 4.03555780947899 1983 4.11810040756887 1984 4.19595287812491 1985 4.24099807859998 1986 4.27822425520211 1987 4.30688173874591 1988 4.32762744439042 1989 4.33767811192337 1990 4.35840686122726 1991 4.36280248860679 1992 4.3065891390861 1993 4.21674182468658 1994 4.07135619903501 1995 3.93821488735317 1996 3.86015463841558 1997 3.78030229204828 1998 3.72604697407393 1999 3.71667195368221 2000 3.69767828583612 2001 3.64066726408579 2002 3.58225396690501 2003 3.52310915444933 2004 3.46485909892891 2005 3.41418344208292 2006 3.37374419919056 2007 3.3462409903512 2008 3.33517712693083 2009 3.34266910105673 2010 3.37042170764062 2011 3.41964273025708 2012 3.48409488162675 2013 3.56149208495099 2014 3.65124792042534 2015 3.742168213115 2016 3.82540141166558 2017 3.90278779732147 2018 3.97627711807451 2019 4.04428123504747 2020 4.11890159755146 2021 4.19920613225071 2022 4.27409457399927 2023 4.34156873916033