Year % of total population 1960 49.2823419067243 1961 49.2550245608038 1962 49.209266042782 1963 49.1537555269703 1964 49.0928296000317 1965 49.0270182983385 1966 48.9589980122697 1967 48.8858630305819 1968 48.8028366789887 1969 48.7098113670461 1970 48.6013457489292 1971 48.4664335657776 1972 48.2975227013828 1973 48.1060010794557 1974 47.9114201284799 1975 47.5292825212496 1976 47.0041189698104 1977 46.5139021650972 1978 46.0475058856331 1979 45.6251196808263 1980 45.2362188855168 1981 44.8866013230119 1982 44.5759070895731 1983 44.2857665830639 1984 44.0239079910004 1985 43.7984848232132 1986 43.6092694774866 1987 43.4498706085069 1988 43.3059020104712 1989 43.1743763053852 1990 43.0528399577051 1991 42.9518941561915 1992 42.8811175052875 1993 42.8459233458107 1994 42.8088635552917 1995 42.7906040053138 1996 42.8088724119384 1997 42.8171159568304 1998 42.8196299635903 1999 42.828070516134 2000 42.8364734661599 2001 42.8421960425572 2002 42.8552939509796 2003 42.889229927527 2004 42.9895424728322 2005 43.0263020478535 2006 42.9493749130811 2007 42.8661736780375 2008 42.7780624464758 2009 42.689821163941 2010 42.6589497071069 2011 42.6999419089518 2012 42.7527817150491 2013 42.7966834143847 2014 42.8363498925653 2015 42.6742133276466 2016 42.2697356706778 2017 42.009913572677 2018 41.9286716399187 2019 41.8430835069576 2020 41.9763010399697 2021 42.2363914989977 2022 42.3787038415417 2023 42.4956759035403