Year % of total population 1960 48.14945436717193 1961 48.17991318320625 1962 48.21109408858876 1963 48.242589059073495 1964 48.27315096334382 1965 48.30239704714635 1966 48.328875173076234 1967 48.35237366329227 1968 48.37233649501549 1969 48.38737615480546 1970 48.4009669836967 1971 48.41648438007534 1972 48.43098852659493 1973 48.44260862685762 1974 48.454778313931264 1975 48.465094441314335 1976 48.47098916682671 1977 48.47677833013033 1978 48.481788581263224 1979 48.48509238576646 1980 48.49774727118679 1981 48.51121266709627 1982 48.516524979999765 1983 48.52262336122742 1984 48.528518082117 1985 48.53473540811344 1986 48.543101523838324 1987 48.55295106049367 1988 48.56184669209569 1989 48.57093810297682 1990 48.581638155336655 1991 48.5927778341696 1992 48.60287854880876 1993 48.61188734308356 1994 48.618568155215975 1995 48.62128323959627 1996 48.621534787282386 1997 48.6202892319032 1998 48.61690775059744 1999 48.61206378757731 2000 48.61342463333672 2001 48.616822940508854 2002 48.62190323184282 2003 48.634072621366116 2004 48.64958078489155 2005 48.66695726509302 2006 48.68159671528012 2007 48.695322504026024 2008 48.70894634265728 2009 48.718499154613184 2010 48.72558265735079 2011 48.73276770210541 2012 48.74292411796238 2013 48.753048056772094 2014 48.76384842687297 2015 48.7815809420572 2016 48.80157699192698 2017 48.818745612747485 2018 48.83459935569799 2019 48.84643166721231 2020 48.8526744935542 2021 48.8549078460245 2022 48.86985832130177 2023 48.88469118858994