Year % of total population 1960 49.5125682593846 1961 49.538394526225 1962 49.5622042379772 1963 49.5850585538358 1964 49.6059098529526 1965 49.6270697217566 1966 49.6492997232457 1967 49.6701760196107 1968 49.6894118370182 1969 49.7072789085066 1970 49.7233977442599 1971 49.7382722259308 1972 49.7522016319365 1973 49.7657749772149 1974 49.7783954949196 1975 49.7898171934385 1976 49.7992055498289 1977 49.8086034979682 1978 49.8191986771826 1979 49.828566382187 1980 49.8373190051072 1981 49.8458732355801 1982 49.8537611623545 1983 49.8609111937082 1984 49.8658368073018 1985 49.8687817429232 1986 49.8703702708356 1987 49.8710516401776 1988 49.8719786476831 1989 49.8737762312498 1990 49.8724771562393 1991 49.8674195773861 1992 49.8620199811009 1993 49.8584788471621 1994 49.8594624338167 1995 49.8620409578996 1996 49.8629813517655 1997 49.8637898343492 1998 49.8675130199054 1999 49.8738346456956 2000 49.8850220583338 2001 49.9047535906359 2002 49.9241895155128 2003 49.9421670807988 2004 49.961652007496 2005 49.9807321555894 2006 50.0034997312568 2007 50.0302578406899 2008 50.0619982943265 2009 50.0953300725659 2010 50.1240605004586 2011 50.1494131923049 2012 50.1756303081605 2013 50.2009533407058 2014 50.2247952175284 2015 50.249825448753 2016 50.2821758911677 2017 50.3204728343181 2018 50.3644195149726 2019 50.4140922707183 2020 50.4614440493452 2021 50.5075289894098 2022 50.5443348695428 2023 50.5697852027597