Year % of total population 1960 50.69370001779725 1961 50.68448087490926 1962 50.67340942156244 1963 50.66435953110692 1964 50.65602807004098 1965 50.647565917913724 1966 50.63982523200334 1967 50.631401875881764 1968 50.62205312768346 1969 50.61255923866781 1970 50.60329469846548 1971 50.594044960178515 1972 50.58725380501811 1973 50.580533281076654 1974 50.56704602162115 1975 50.54962729655868 1976 50.53302797535081 1977 50.51687205621838 1978 50.50155677211035 1979 50.48702637246337 1980 50.47287627050898 1981 50.46184746054413 1982 50.4528329803582 1983 50.44774503726551 1984 50.444763602463304 1985 50.43767025270673 1986 50.4273736000901 1987 50.417513817486636 1988 50.411566133713855 1989 50.40153953486691 1990 50.38840435171899 1991 50.37118015222791 1992 50.352473953464774 1993 50.3427490858167 1994 50.34122323628759 1995 50.33772933825483 1996 50.329904041852345 1997 50.321690321984725 1998 50.316964758724396 1999 50.31663629882564 2000 50.30950004689049 2001 50.29586437330343 2002 50.27980326835833 2003 50.261755971738076 2004 50.24372466217445 2005 50.22697180063016 2006 50.211042610911285 2007 50.196314254377064 2008 50.18291284800711 2009 50.170323787212276 2010 50.157880354201346 2011 50.14491519092627 2012 50.13295139049935 2013 50.12361480639538 2014 50.11574834286032 2015 50.10802699021637 2016 50.10026619456663 2017 50.09346118357363 2018 50.089279364452366 2019 50.08603472977057 2020 50.08244524012588 2021 50.08106960478095 2022 50.08183425154826 2023 50.08166466319466