Year % of total population 1960 51.6762629595148 1961 51.710698415914 1962 51.7597261553357 1963 51.8175537316663 1964 51.871130437594 1965 51.9234539821968 1966 51.975845704551 1967 52.0260633377436 1968 52.074601395206 1969 52.1234306730822 1970 52.1683272330659 1971 52.2074751406082 1972 52.2445539094031 1973 52.2780473013948 1974 52.3072273956848 1975 52.3315988633686 1976 52.3529395609677 1977 52.369768350129 1978 52.3815643377061 1979 52.3873124361108 1980 52.3844269934041 1981 52.3727314932543 1982 52.3542461459834 1983 52.3328355623387 1984 52.3107845118203 1985 52.2867615493841 1986 52.25913601295 1987 52.2286810394805 1988 52.1949679709518 1989 52.1577188175866 1990 52.1046053126377 1991 52.0390692430995 1992 51.9745614934865 1993 51.9096148898506 1994 51.8512834286153 1995 51.7960859543235 1996 51.7438334195358 1997 51.6931966755964 1998 51.6511918843098 1999 51.7870715774357 2000 52.0829962858072 2001 52.3670748001605 2002 52.6387291453974 2003 52.8991045133598 2004 53.1458127881771 2005 53.3010313225985 2006 53.3211537890265 2007 53.2902786621167 2008 53.2640702180686 2009 53.2429000197799 2010 53.2261493715238 2011 53.2121834043382 2012 53.1998419180609 2013 53.1875223799509 2014 53.1759730674116 2015 53.1682797999123 2016 53.1682762907113 2017 53.1448008982689 2018 53.0943608154353 2019 53.045569861061 2020 52.9973877225549 2021 52.9486061485351 2022 52.9014448115227 2023 52.8553866785874