Year % of total population 1960 51.060700510383 1961 51.0493348147321 1962 51.036035864682 1963 51.0219830564485 1964 51.0097623325862 1965 50.9978357547919 1966 50.9837192396554 1967 50.9698176586894 1968 50.9563101126024 1969 50.9404270749947 1970 50.9226513416121 1971 50.9043075777482 1972 50.8856817330854 1973 50.8687398471245 1974 50.8529530513683 1975 50.8371272650526 1976 50.8216190728789 1977 50.805619550718 1978 50.7898081122259 1979 50.7748689378626 1980 50.7589329816121 1981 50.7427455182962 1982 50.7252544057955 1983 50.7057100375047 1984 50.6861511104285 1985 50.6673812175854 1986 50.6483858509212 1987 50.6290496521609 1988 50.6092659146404 1989 50.5893828495079 1990 50.5693632327869 1991 50.5490621240699 1992 50.5276419206397 1993 50.5062934699969 1994 50.4861417816756 1995 50.4566100160077 1996 50.4176512970178 1997 50.3775196939158 1998 50.3346745663861 1999 50.2890960730647 2000 50.2423925809252 2001 50.1916438974736 2002 50.1346802852509 2003 50.0742891385507 2004 50.0062098213971 2005 49.925429577064 2006 49.8337475225186 2007 49.7323480713962 2008 49.6261198591481 2009 49.5160691412737 2010 49.3998907138954 2011 49.2798307475317 2012 49.1608069886019 2013 49.0512694075257 2014 48.964768628089 2015 48.9133194348384 2016 48.8971367161249 2017 48.9116280373701 2018 48.943345200665 2019 48.9775881326119 2020 49.0170214863387 2021 49.067884172889 2022 49.1206333047578 2023 49.1671475346861