Year % of total population 1960 48.86230017682514 1961 48.88159925840465 1962 48.90540292128344 1963 48.931481750093376 1964 48.95525894953057 1965 48.977823152222605 1966 49.0004614872549 1967 49.01998881619967 1968 49.03769808500569 1969 49.05548345818987 1970 49.06618485700386 1971 49.08207060683232 1972 49.10782765853467 1973 49.13287980812749 1974 49.16170573467295 1975 49.192206199934006 1976 49.221350961295215 1977 49.24694767374753 1978 49.26333156376257 1979 49.28250024247529 1980 49.32981388143078 1981 49.376189365367594 1982 49.40343494318887 1983 49.42483013653692 1984 49.442322511076895 1985 49.46095701867534 1986 49.479034635331324 1987 49.49284697118681 1988 49.50145610109064 1989 49.51643109718042 1990 49.539399529915784 1991 49.56043668409754 1992 49.580187072267364 1993 49.59323482208684 1994 49.609344978804785 1995 49.62666537436099 1996 49.63945127181979 1997 49.651780341450326 1998 49.66220877026426 1999 49.67142540105256 2000 49.6825310684892 2001 49.695688702571424 2002 49.709911951871156 2003 49.72312814746903 2004 49.73405390164413 2005 49.74282430470001 2006 49.75340085666613 2007 49.76558367457315 2008 49.77828433243052 2009 49.792366803734126 2010 49.80693292374956 2011 49.821644769072854 2012 49.83594806729023 2013 49.84873866026623 2014 49.860448528549 2015 49.870288810721995 2016 49.878641397874866 2017 49.88624540865194 2018 49.89250261605486 2019 49.89716825949936 2020 49.901723198257656 2021 49.90506248617182 2022 49.91467583172502 2023 49.91075362337589