Year % of total population 1960 50.2944045004727 1961 50.2742772112418 1962 50.2557290761477 1963 50.2381306287504 1964 50.2213825490447 1965 50.2064132955779 1966 50.1932401776841 1967 50.1816194976336 1968 50.1708597603287 1969 50.1609578092099 1970 50.15170905074 1971 50.1431856910062 1972 50.1357109756905 1973 50.1295299083103 1974 50.1228310402058 1975 50.2286186567488 1976 50.4514065447388 1977 50.6826974623289 1978 50.9174392316994 1979 51.1531812358068 1980 51.3585602531204 1981 51.4184058529072 1982 51.3817484643847 1983 51.3761827986208 1984 51.3976582317132 1985 51.4417783668006 1986 51.5034929780338 1987 51.5777902741317 1988 51.6610164800952 1989 51.8282898605582 1990 52.0801840375884 1991 52.1541955982942 1992 52.0523666430608 1993 51.9584898494553 1994 51.8722858576535 1995 51.7918132481147 1996 51.7152690645266 1997 51.6407953603584 1998 51.5680802984303 1999 51.4850879652547 2000 51.4001092945945 2001 51.3426076790508 2002 51.3039788311627 2003 51.2679652236218 2004 51.2424563076315 2005 51.2391766127144 2006 51.2494922398156 2007 51.2632411253313 2008 51.2792931675161 2009 51.2981211404546 2010 51.2949178951314 2011 51.2408174120556 2012 51.164215470837 2013 51.0944380593256 2014 51.0308651874109 2015 50.9999477530927 2016 50.9986427800307 2017 50.9983229236629 2018 50.9985774798014 2019 50.9991893398978 2020 50.9980423001627 2021 50.9937605133306 2022 50.9922492872565 2023 50.993976169267