Year % of total population 1960 45.5022289115986 1961 45.4708121801633 1962 45.4387320921902 1963 45.471015434901 1964 45.5957012656521 1965 45.7533500197711 1966 45.8965799505455 1967 46.0270481341514 1968 46.0836213476105 1969 46.080467462174 1970 46.0863801188286 1971 46.102371752352 1972 46.1024477142205 1973 46.1138355861897 1974 46.1680386691213 1975 46.2411455971378 1976 46.3179079369644 1977 46.4024024574572 1978 46.5289294298058 1979 46.7115141446681 1980 46.91262810686 1981 47.0836846974052 1982 47.2136918374616 1983 47.2756698019328 1984 47.2838050990668 1985 47.2246537719467 1986 47.0971085676613 1987 46.9290572628203 1988 46.7665382111932 1989 46.5937401271255 1990 46.3706839484008 1991 46.1445673519622 1992 45.9156745093303 1993 45.7434146742755 1994 45.6399143687986 1995 45.4759398301136 1996 45.2046786245417 1997 44.9833205634986 1998 44.848349106428 1999 44.7347097655663 2000 44.6643663141954 2001 44.6121422205689 2002 44.5783706047926 2003 44.5714457293231 2004 44.5947758392085 2005 44.6581512032396 2006 44.7419708943719 2007 44.8215354707276 2008 44.9037398541133 2009 44.9864243504531 2010 45.0517797647124 2011 45.0657538441217 2012 45.0239695560245 2013 44.9677616235639 2014 44.9085032266791 2015 44.8456866806939 2016 44.7458178384038 2017 44.5938742601529 2018 44.3940193398078 2019 44.1461925333131 2020 43.8773745870602 2021 43.6073549277136 2022 43.3574662750237 2023 43.11999806163