Year % of total population 1960 49.2004949317089 1961 49.0638625288535 1962 49.0233574648272 1963 48.9810901001112 1964 48.9281676667536 1965 48.8762374134342 1966 48.8313630980824 1967 48.7953278254853 1968 48.7676477626226 1969 48.7425688360451 1970 48.7398835041043 1971 48.8399094006357 1972 49.0207231291356 1973 49.1865847897969 1974 49.3446574516967 1975 49.5042812077512 1976 49.6711820583441 1977 49.8446681887937 1978 50.0149638995922 1979 50.166492068243 1980 50.2753663772986 1981 50.332980874469 1982 50.3717472118959 1983 50.4081073678444 1984 50.4393354711307 1985 50.4558450666235 1986 50.4812929725868 1987 50.5260169957599 1988 50.5763130066972 1989 50.6294759328326 1990 50.6751348529668 1991 50.7395376162007 1992 50.8110147114297 1993 50.8759086807743 1994 50.9296070105395 1995 50.9812494744808 1996 51.0344251336898 1997 51.1000049811546 1998 51.1657838720855 1999 51.2274314950558 2000 51.2782910495185 2001 51.307417061995 2002 51.3204267851108 2003 51.3110712684895 2004 51.2990117947083 2005 51.3048174208612 2006 51.3229023002172 2007 51.3506238520489 2008 51.3737392898922 2009 51.3677331775922 2010 51.3657068104087 2011 51.3685801079754 2012 51.3687853996224 2013 51.376247913583 2014 51.3818956672717 2015 51.374635753199 2016 51.4080040591108 2017 51.4768866060846 2018 51.5392238599361 2019 51.6109822603899 2020 51.6812169105589 2021 51.759756952559 2022 51.8119780630687 2023 51.8269365839954