Year % of total population 1960 48.8160475658747 1961 48.8577233350381 1962 48.8986720163607 1963 48.9369408217206 1964 48.9744486595398 1965 49.0121721923767 1966 49.0487154408325 1967 49.0838237618047 1968 49.1172575981669 1969 49.1487377110503 1970 49.1778805804432 1971 49.1913931636839 1972 49.1904879429583 1973 49.1889479845178 1974 49.1872448039196 1975 49.1856105096484 1976 49.1838649487931 1977 49.182397271618 1978 49.1817151638245 1979 49.1819655844557 1980 49.1824790982502 1981 49.2004414858619 1982 49.2344740683957 1983 49.2658437386168 1984 49.2949160497019 1985 49.3216208344352 1986 49.3456291253561 1987 49.3662770373713 1988 49.3833493534513 1989 49.398267552386 1990 49.4127799086827 1991 49.4282240532128 1992 49.4450723440496 1993 49.4626293269565 1994 49.4960645094743 1995 49.544807797924 1996 49.5933104631374 1997 49.6429619983544 1998 49.6947368249331 1999 49.7481683534033 2000 49.8023868808624 2001 49.857336216743 2002 49.9079458097371 2003 49.9409467644033 2004 49.9613373155304 2005 49.9816825616386 2006 50.0015185651247 2007 50.0203595652734 2008 50.0382074079185 2009 50.0552016119562 2010 50.0711266908919 2011 50.0859655659806 2012 50.1024379072426 2013 50.1205088088861 2014 50.138536568836 2015 50.1580702606215 2016 50.1811847844985 2017 50.20869490813 2018 50.2380068790891 2019 50.2656738092396 2020 50.2967161851418 2021 50.3458307881083 2022 50.387092050073 2023 50.4068132339519