Year % of total population 1960 50.4458278174677 1961 50.3717055793167 1962 50.2879777103173 1963 50.2174748639518 1964 50.1581967535275 1965 50.0992006715122 1966 50.0434935499991 1967 49.9950633240883 1968 49.9499237970825 1969 49.903931609463 1970 49.8184525040321 1971 49.7103768756449 1972 49.6097685799734 1973 49.5046305418719 1974 49.3966723682165 1975 49.3016108439538 1976 49.2249252646642 1977 49.1529779781617 1978 49.0826513499313 1979 49.0096810813479 1980 48.9482061281721 1981 48.9399317039069 1982 48.9787348516164 1983 49.0224475018103 1984 49.070566800859 1985 49.1189211679189 1986 49.1635315298072 1987 49.2121885600655 1988 49.2680917759714 1989 49.3287445087999 1990 49.3835882774975 1991 49.3730626079308 1992 49.337621322235 1993 49.3333401999207 1994 49.3362430449157 1995 49.3451433512154 1996 49.3609416698437 1997 49.3793668851357 1998 49.3990849551148 1999 49.4214400192495 2000 49.4438574744391 2001 49.4848851269649 2002 49.5443127971342 2003 49.6056788309002 2004 49.6685383349012 2005 49.7291127953633 2006 49.7868243231542 2007 49.8426842277057 2008 49.8967844512564 2009 49.9482765754955 2010 49.9453596021186 2011 49.8904526943782 2012 49.8393456338504 2013 49.7899549737734 2014 49.7464061191764 2015 49.7136473903149 2016 49.6889573742285 2017 49.6689289631779 2018 49.6529395444766 2019 49.6410902221822 2020 49.6582860875973 2021 49.6961485484875 2022 49.7258631240254 2023 49.7447818414167