Year % of total population 1960 50.1547200511375 1961 50.1350948428682 1962 50.1161481416034 1963 50.0984871094378 1964 50.0835007058593 1965 50.072621379907 1966 50.0663952561927 1967 50.0647363385595 1968 50.0663815301357 1969 50.0700784024575 1970 50.0747924035297 1971 50.0792522295753 1972 50.0736406444113 1973 50.0679713741176 1974 50.071013006954 1975 50.0742092368015 1976 50.0787120002551 1977 50.0889530980557 1978 50.1260011046672 1979 50.2188493894959 1980 50.2836701017071 1981 50.2897436146476 1982 50.296514281885 1983 50.3240798859569 1984 50.3823784508427 1985 50.4504875587093 1986 50.510784350121 1987 50.5692175722568 1988 50.61281221712 1989 50.6231948248761 1990 50.6209583189445 1991 50.6168180586044 1992 50.6109769396807 1993 50.6057517978372 1994 50.6008743292269 1995 50.5954240311534 1996 50.5981953669185 1997 50.6102580044535 1998 50.6202568593112 1999 50.6312825775197 2000 50.6468585589303 2001 50.6639238756084 2002 50.6821251012073 2003 50.7011378037678 2004 50.7204956051764 2005 50.7303455859356 2006 50.7307392603472 2007 50.7308933307154 2008 50.7309224887759 2009 50.7309329174811 2010 50.7307025899742 2011 50.7301996296878 2012 50.7294373518288 2013 50.7284644405911 2014 50.7271759711732 2015 50.7253360192221 2016 50.7225669426778 2017 50.7190921979862 2018 50.7159590963984 2019 50.7147290395269 2020 50.7193791496167 2021 50.7246144099589 2022 50.7254772039344 2023 50.7261389294539