Year % of total population 1960 49.33611219613006 1961 49.348499110910076 1962 49.35532403025619 1963 49.35739268526439 1964 49.35901616708776 1965 49.36272773283223 1966 49.36687803849581 1967 49.369857736657714 1968 49.372167312546125 1969 49.373202306423785 1970 49.37243803979691 1971 49.37384803333871 1972 49.37272075304893 1973 49.36612222934088 1974 49.36020064092654 1975 49.35832939229777 1976 49.36229088435176 1977 49.36725074125211 1978 49.37234834023154 1979 49.37945923386224 1980 49.382616335368354 1981 49.38358833644957 1982 49.389618084712005 1983 49.39988766256 1984 49.41123192316332 1985 49.42298401690761 1986 49.42994692154713 1987 49.43103430028274 1988 49.43217537542986 1989 49.431077220775656 1990 49.42738269689128 1991 49.42263297431639 1992 49.41994735552942 1993 49.4199137328441 1994 49.41858060672006 1995 49.41644849269843 1996 49.4146759690396 1997 49.41088899860151 1998 49.406888384003565 1999 49.403836742332935 2000 49.39946807535555 2001 49.39617987516028 2002 49.39490564113937 2003 49.39384094537406 2004 49.393170166945815 2005 49.393793380052685 2006 49.39612250716745 2007 49.39965212330489 2008 49.40505216750388 2009 49.41153820905829 2010 49.41719363517622 2011 49.422289781533706 2012 49.427414640071724 2013 49.432895351562706 2014 49.43785044257975 2015 49.44497501943761 2016 49.456543315963685 2017 49.46932718154508 2018 49.48205908283787 2019 49.49570361941494 2020 49.51131591726757 2021 49.52972895248451 2022 49.54593899123602 2023 49.561811560114684