Year % of total population 1960 49.76315186156057 1961 49.76972282482217 1962 49.774986317177756 1963 49.77939058959781 1964 49.78358745215194 1965 49.78737740316813 1966 49.79093600908734 1967 49.794004581753455 1968 49.795948478807716 1969 49.79703679724066 1970 49.79692783599456 1971 49.8398276792781 1972 49.882662958172276 1973 49.88274111541277 1974 49.879857407178385 1975 49.88982791620172 1976 49.90819137849957 1977 49.91800072853813 1978 49.92810602509749 1979 49.93984145228259 1980 49.94858164465234 1981 49.95450487284004 1982 49.959316445188605 1983 49.96278837163044 1984 49.967911638922814 1985 49.97221488544142 1986 49.97424327231776 1987 49.975754010671636 1988 49.98181436325166 1989 49.98597331925348 1990 49.98137151026129 1991 49.974036834349086 1992 49.9673566679839 1993 49.96272212881426 1994 49.96249137424168 1995 49.96943998502207 1996 49.981983887075444 1997 49.995044551416846 1998 50.009474716967 1999 50.02490520460072 2000 50.0347691418131 2001 50.04448495353011 2002 50.05658502060854 2003 50.06933509798964 2004 50.08300544480222 2005 50.09875041630499 2006 50.11981809569995 2007 50.14163015379636 2008 50.16510685331582 2009 50.18868654307196 2010 50.2038737140332 2011 50.21446617966661 2012 50.22472946225225 2013 50.235224917156984 2014 50.24459813620462 2015 50.24981113852565 2016 50.249621176172404 2017 50.247818089166245 2018 50.24913440421322 2019 50.25310294975579 2020 50.2530371710426 2021 50.24986678244516 2022 50.25209973405352 2023 50.25727119949491