Year % of total population 1960 50.56238747828121 1961 50.57731932685542 1962 50.60201422282894 1963 50.62805953638717 1964 50.658380717749495 1965 50.69210014870494 1966 50.71054674858052 1967 50.71361236969511 1968 50.72029204391349 1969 50.729508846271735 1970 50.73912398801674 1971 50.750439239807335 1972 50.76128673296799 1973 50.76769737430021 1974 50.77510479622975 1975 50.79809202093502 1976 50.83054370619815 1977 50.8706230307701 1978 50.91990518692816 1979 50.96502646644275 1980 51.00204636177262 1981 51.064529976536946 1982 51.10594962103116 1983 51.10450597805412 1984 51.10728217346929 1985 51.1136537840328 1986 51.119531235802576 1987 51.124005000843425 1988 51.1319764143227 1989 51.1455705338035 1990 51.146233769569456 1991 51.157870911499614 1992 51.182180251474804 1993 51.20521262304572 1994 51.22458590035502 1995 51.23496610189721 1996 51.24961578551704 1997 51.27314856107967 1998 51.28940659595068 1999 51.29699196128689 2000 51.30054403681806 2001 51.300927430252194 2002 51.30364513410764 2003 51.31334103350929 2004 51.32278555108806 2005 51.351341996707326 2006 51.426134277971514 2007 51.527775158511275 2008 51.6304123079446 2009 51.71364603849097 2010 51.75264367501217 2011 51.76749356633562 2012 51.780591206779626 2013 51.788515524650705 2014 51.79625802718142 2015 51.83017563886642 2016 51.870500354185154 2017 51.87844893848033 2018 51.867287171636605 2019 51.840104881764965 2020 51.77518544341516 2021 51.7090441929789 2022 51.67297567944015 2023 51.6414178477353