Year % of total population 1960 49.8960246413782 1961 49.5742613770183 1962 49.3063543929829 1963 49.1115037738545 1964 48.9785038932445 1965 48.910656073627 1966 48.8936552405565 1967 48.9007933867623 1968 48.9262602640811 1969 48.9631229360094 1970 49.00708039844 1971 49.0536447844927 1972 49.1002345890362 1973 49.1506998768674 1974 49.2337016638879 1975 49.2928183941793 1976 49.2929890542621 1977 49.2820510287052 1978 49.2697658383582 1979 49.2655286559653 1980 49.2773141273534 1981 49.3056447734594 1982 49.3502541433547 1983 49.4136656947698 1984 49.4948226966746 1985 49.5932828481847 1986 49.7128987663234 1987 49.8569278364607 1988 50.0401884467189 1989 50.2669742843214 1990 50.5368740097925 1991 50.8485415549211 1992 51.1824776110718 1993 51.5309567377842 1994 51.8953608869306 1995 52.2751003534164 1996 52.6625103665585 1997 53.0472507662621 1998 53.4522901268551 1999 53.8452750462572 2000 54.2083757403228 2001 54.5845437202845 2002 54.9788654622586 2003 55.3959830352642 2004 55.845394669791 2005 56.3316193439109 2006 56.8506752569333 2007 57.4013226386851 2008 57.9816255125264 2009 58.5832159692122 2010 59.1946095889418 2011 59.8103138131154 2012 60.4258591813706 2013 61.0427896079495 2014 61.6684778824885 2015 62.2829746025757 2016 62.8655406692723 2017 63.4120618163256 2018 63.9174499762582 2019 64.3816557147432 2020 64.8157638150587 2021 65.2286644771768 2022 65.6103535181318 2023 65.9459902860145