Year % of total population 1960 49.1393202461178 1961 49.1498091774023 1962 49.1566987756254 1963 49.1622444541105 1964 49.1732269930214 1965 49.1749174917492 1966 49.1727243595149 1967 49.1717348207386 1968 49.1651393115973 1969 49.1538850497219 1970 49.1388353128278 1971 49.1192872687704 1972 49.1071276866876 1973 49.0811083972037 1974 49.0321183447724 1975 48.9895412995141 1976 48.938604088703 1977 48.8879850321321 1978 48.8418802034403 1979 48.7968906234881 1980 48.754556988453 1981 48.6983741655221 1982 48.6833766398378 1983 48.7162979131008 1984 48.754947486521 1985 48.80889605757 1986 48.8699208402398 1987 48.9480217222653 1988 49.0331405832245 1989 49.0788903337668 1990 49.0488799610421 1991 48.9316869032182 1992 48.7961591064509 1993 48.6774461028192 1994 48.5517333690269 1995 48.4425697598962 1996 48.356145409673 1997 48.2811698306824 1998 48.2093533281963 1999 48.1379580277896 2000 48.0724122063725 2001 47.9794025868057 2002 47.8857279829159 2003 47.8171756507481 2004 47.7474877057943 2005 47.7006445603971 2006 47.6863376775516 2007 47.6830566088421 2008 47.6794971223315 2009 47.6676208523162 2010 47.695358826402 2011 47.6927177948029 2012 47.6261360075212 2013 47.5573483670295 2014 47.4844102940325 2015 47.411684587126 2016 47.3425253160936 2017 47.27567598327 2018 47.2112644155452 2019 47.15056086883 2020 47.108880236431 2021 47.1263504697898 2022 47.1351402132557 2023 47.0957968328048