Year % of total population 1960 46.5230069366975 1961 46.8094799475406 1962 46.991452785956 1963 47.0489128672454 1964 46.974046543071 1965 46.8595536634694 1966 46.7825121477893 1967 46.7280968233975 1968 46.6966710222485 1969 46.702834395132 1970 46.7629071321348 1971 46.8876863713417 1972 47.1141385665647 1973 47.3696379051378 1974 47.5396931368078 1975 47.6554303872343 1976 47.7492080473037 1977 47.8069875281469 1978 47.8307490092406 1979 47.9236884939804 1980 48.0876016051158 1981 48.1912912596861 1982 48.212294161434 1983 48.1852941663258 1984 48.1120208111339 1985 48.0719087779936 1986 48.0873639119853 1987 48.106157447727 1988 48.1523074052222 1989 48.2301701258243 1990 48.3435029906241 1991 48.4670551466573 1992 48.5834447157429 1993 48.7283947280778 1994 48.9323303331626 1995 49.3827448229716 1996 49.8031478045029 1997 50.0942179514635 1998 50.316580150355 1999 50.3946487271399 2000 50.4746708541665 2001 50.5464007761478 2002 50.5560549883352 2003 50.5231535894886 2004 50.5307828291326 2005 50.5278345701421 2006 50.4836205977804 2007 50.3912437353829 2008 50.2511286350623 2009 50.0849693052324 2010 49.8973802512964 2011 49.6993173720913 2012 49.486735955793 2013 49.2445604456821 2014 48.9206518964196 2015 48.5013123657923 2016 47.9526546442723 2017 47.3310072236745 2018 46.7601946217783 2019 46.2007311914481 2020 45.6701073228634 2021 45.1916339369026 2022 44.7813859105852 2023 44.4272294534058