Year % of total population 1960 49.6712080877749 1961 49.6508301638252 1962 49.6339699598388 1963 49.618022921052 1964 49.6038680866956 1965 49.592387558731 1966 49.584326921604 1967 49.5790275536489 1968 49.5730494650917 1969 49.5623124032313 1970 49.5413243829182 1971 49.5072109987536 1972 49.459815763737 1973 49.4041559819374 1974 49.3420850183293 1975 49.270968695333 1976 49.1932909799918 1977 49.1114763628676 1978 49.0302035869023 1979 48.9579441901957 1980 48.9003257646037 1981 48.8599638435837 1982 48.838877907205 1983 48.8337977166652 1984 48.8441497762715 1985 48.8713064665387 1986 48.9140209261238 1987 48.9689687316498 1988 49.0296837552857 1989 49.0872476396499 1990 49.1479813570512 1991 49.2134206121346 1992 49.2701979378516 1993 49.3246970627853 1994 49.3727031475141 1995 49.4220073063022 1996 49.476846305177 1997 49.421036297468 1998 49.3458341491978 1999 49.3407195222154 2000 49.293693977678 2001 49.1441164793942 2002 49.0426555091696 2003 49.0586227895362 2004 49.0520797867301 2005 49.0133711680183 2006 48.9824850961217 2007 48.9838465826522 2008 48.9970485036225 2009 49.0112233684115 2010 49.0263007646586 2011 49.0444267472363 2012 49.0594782018061 2013 49.0738035517388 2014 49.0958951732341 2015 49.1290468138735 2016 49.1727380430032 2017 49.2163209414034 2018 49.260979649003 2019 49.3105942059271 2020 49.3597764448469 2021 49.4084129759695 2022 49.4541551434516 2023 49.4946236286356