Year % of total population 1960 50.9918403499766 1961 51.005538656454 1962 51.0146929757325 1963 51.0220633208448 1964 51.0279753941702 1965 51.0333574264666 1966 51.038129158583 1967 51.0431225564829 1968 51.0500453420346 1969 51.0582249976543 1970 51.0646068862614 1971 51.0697628226448 1972 51.0782246071203 1973 51.0883760040625 1974 51.09693083388 1975 51.1043147746233 1976 51.1125399126232 1977 51.1205632566836 1978 51.1264253016722 1979 51.1308431907971 1980 51.1354477460849 1981 51.139096378639 1982 51.139145710969 1983 51.1362857790356 1984 51.1352191703128 1985 51.1366996965953 1986 51.134826045997 1987 51.1307373845493 1988 51.1291647152474 1989 51.1266487339957 1990 51.1231620674006 1991 51.1195575879612 1992 51.1162681807086 1993 51.1141867699058 1994 51.1114904865162 1995 51.1105577126868 1996 51.110895545285 1997 51.1090637085332 1998 51.1052910633498 1999 51.1020693999151 2000 51.0989938664365 2001 51.0946523293875 2002 51.0887476186724 2003 51.0795333836415 2004 51.0698331692036 2005 51.0600763831587 2006 51.0486984992405 2007 51.0350632273473 2008 51.0179536775281 2009 50.9985690685503 2010 50.9764664233058 2011 50.9509578674856 2012 50.9230007889485 2013 50.8926614956314 2014 50.8595945341045 2015 50.8214261297904 2016 50.7830899025134 2017 50.7476093129872 2018 50.7100390921331 2019 50.6724342360864 2020 50.6365360785081 2021 50.61030008477 2022 50.5890992825111 2023 50.5646346869026