Year % of total population 1960 50.2945588672905 1961 50.1431534490293 1962 50.0100926514974 1963 49.9591964962896 1964 49.9760420355846 1965 49.9846570588111 1966 49.9914218020049 1967 50.0038808309485 1968 50.0260889495012 1969 50.0529762173634 1970 50.0728042786039 1971 50.0800207263095 1972 50.0756323162259 1973 50.0599368612767 1974 50.0368643157581 1975 50.0130915513387 1976 49.9922175629331 1977 49.9771703435768 1978 49.9764832275904 1979 49.991794614371 1980 50.0124868946507 1981 50.0323420657869 1982 50.0504266198675 1983 50.0667388552684 1984 50.0837762575521 1985 50.1038159254567 1986 50.1290920609652 1987 50.159386436422 1988 50.1936327588726 1989 50.2166373934672 1990 50.2283438811196 1991 50.242786957002 1992 50.2583955065384 1993 50.2741694860308 1994 50.2901138817559 1995 50.3061363735842 1996 50.3233938599926 1997 50.3444705641306 1998 50.3671707520701 1999 50.3878133225283 2000 50.3724022115245 2001 50.3272060473971 2002 50.2950152267863 2003 50.2766988786602 2004 50.265509669422 2005 50.2560315404288 2006 50.2456569356922 2007 50.231516750376 2008 50.2138094762607 2009 50.1945653694267 2010 50.1808312241908 2011 50.1975263289477 2012 50.2349813723141 2013 50.2635886365338 2014 50.2825353113159 2015 50.2945443273613 2016 50.301810001799 2017 50.3041314199152 2018 50.3053896171007 2019 50.3130771586701 2020 50.3361376423466 2021 50.371290603749 2022 50.4059598053888 2023 50.4389269186173