Year % of total population 1960 48.352141969595834 1961 48.3772381198595 1962 48.400203348512896 1963 48.42256414475756 1964 48.443222578073204 1965 48.45578515018037 1966 48.45841148000056 1967 48.455574510046795 1968 48.46027259807111 1969 48.47413767143849 1970 48.48684900068801 1971 48.506298658552396 1972 48.531077239069134 1973 48.55133938107821 1974 48.56994220285198 1975 48.587020019318764 1976 48.602371202846555 1977 48.61842452914666 1978 48.633556148254335 1979 48.64748175450229 1980 48.665345262866836 1981 48.68525483263108 1982 48.70278460310714 1983 48.721850497200315 1984 48.741121318809206 1985 48.76236562138096 1986 48.788746172769656 1987 48.81784078155137 1988 48.84670686240699 1989 48.87510430126326 1990 48.89797636693217 1991 48.916914680439604 1992 48.9353778551984 1993 48.94918064900446 1994 48.958493936633324 1995 48.96283918876613 1996 48.96672198778357 1997 48.972892595752846 1998 48.98127599844798 1999 48.991112773036065 2000 49.00141279531226 2001 49.00591171039156 2002 49.004540363740986 2003 49.00255794570668 2004 49.00143086304089 2005 49.008534751034546 2006 49.03190710072788 2007 49.06864424556005 2008 49.10977320653421 2009 49.14454132663558 2010 49.16565864288918 2011 49.18853556064751 2012 49.22156134706503 2013 49.25304374186251 2014 49.28112025551167 2015 49.31930462130144 2016 49.36068624260175 2017 49.389785122401356 2018 49.41252701444495 2019 49.42704039617793 2020 49.41695208110018 2021 49.39728807494739 2022 49.39529964471495 2023 49.39696892380091