Year % of total population 1960 50.1282199814345 1961 49.9523618664063 1962 49.8100175888227 1963 49.694223842069 1964 49.6520005392408 1965 49.7085902712733 1966 49.823359836933 1967 49.9990901553203 1968 50.2476562715829 1969 50.564362313188 1970 50.9486801738931 1971 51.3808574639308 1972 51.8622920651562 1973 52.3980047166236 1974 52.9603309617809 1975 53.5327657799519 1976 54.0981417954521 1977 54.6705049481516 1978 55.2512981326535 1979 55.8183381162981 1980 56.3733586255252 1981 56.8987651824749 1982 57.3863162104657 1983 57.8457124584766 1984 58.2593567465086 1985 58.6172334729562 1986 58.9201110990933 1987 59.1737505880746 1988 59.4016977529349 1989 59.6149649171163 1990 59.8245673095099 1991 60.0285865611305 1992 60.2417646533834 1993 60.4836654101209 1994 60.7589145811128 1995 61.0584204364619 1996 61.3710945174394 1997 61.7037826573033 1998 62.0473218792189 1999 62.3965567166938 2000 62.7551867059085 2001 63.1279303928736 2002 63.5182467950458 2003 63.9223607983855 2004 64.3417108684843 2005 64.7731895594935 2006 65.2173567944916 2007 65.6684538815422 2008 66.1113752627991 2009 66.5420718732673 2010 66.9521302474548 2011 67.3319167683603 2012 67.6764902997585 2013 67.9893866356041 2014 68.262574830037 2015 68.494771446898 2016 68.7125510794214 2017 68.9695064413545 2018 69.2497486883399 2019 69.4679281743718 2020 69.6053276353906 2021 69.6843191903994 2022 69.658047927803 2023 69.5099482976607