Year % of total population 1960 50.6311313677738 1961 50.6272555533209 1962 50.6198062283649 1963 50.611656993623 1964 50.6052845663815 1965 50.5994596470741 1966 50.603766656545 1967 50.6171309520508 1968 50.626805830831 1969 50.6337701437936 1970 50.6409728542938 1971 50.6468344709761 1972 50.651775612325 1973 50.6486357322756 1974 50.6359736226862 1975 50.621628702459 1976 50.6155701671683 1977 50.6177464893073 1978 50.6184451112431 1979 50.6164060303315 1980 50.6271905050326 1981 50.6408042229644 1982 50.6247258171838 1983 50.6123367083246 1984 50.6275713557574 1985 50.6353785235899 1986 50.6248143864201 1987 50.6480656317135 1988 50.660619167695 1989 50.6324794524196 1990 50.6289697273192 1991 50.6126179740992 1992 50.5679901683758 1993 50.5296140986434 1994 50.4870470156369 1995 50.4334391660967 1996 50.3826581453444 1997 50.3387656266902 1998 50.2966034363218 1999 50.2555222203666 2000 50.2176680202786 2001 50.1810558012574 2002 50.1423622390059 2003 50.1033234214471 2004 50.0675352158313 2005 50.0346626270913 2006 50.0049490555986 2007 49.9793849160256 2008 49.9554721180856 2009 49.9319249054986 2010 49.9092833320176 2011 49.8897199402812 2012 49.8726294023649 2013 49.8582330957513 2014 49.8465882550836 2015 49.8374501088169 2016 49.8265934376946 2017 49.8157681710929 2018 49.8090643486598 2019 49.8053620585674 2020 49.8036342016597 2021 49.8040715400815 2022 49.8062185319169 2023 49.8073481467476