Year % of total population 1960 49.016644255404 1961 49.0497650991436 1962 49.0803027521202 1963 49.1088483898989 1964 49.1346750919712 1965 49.1587943021075 1966 49.1820800305098 1967 49.2033565214626 1968 49.2243874837972 1969 49.2454952650441 1970 49.2638805280499 1971 49.2814295886956 1972 49.2978957863252 1973 49.3123672364265 1974 49.3274968349298 1975 49.3437841566593 1976 49.3611660402627 1977 49.3800595523543 1978 49.4004029656013 1979 49.421147870256 1980 49.4415948213722 1981 49.4617754805692 1982 49.4814269680361 1983 49.500404924473 1984 49.5184681164296 1985 49.5357916188649 1986 49.5523603692635 1987 49.5697264610284 1988 49.5884949738948 1989 49.606639106007 1990 49.6239005712645 1991 49.6403098015069 1992 49.6559706613352 1993 49.6716000645156 1994 49.6879716995701 1995 49.7061461209774 1996 49.7255866860128 1997 49.7412764668663 1998 49.7511234393907 1999 49.755941893924 2000 49.7563674769128 2001 49.7543128482827 2002 49.7525205476619 2003 49.7524868386978 2004 49.7559719932974 2005 49.7612064087752 2006 49.7657478057574 2007 49.7726268732913 2008 49.7796315507581 2009 49.7852403162329 2010 49.7909650305487 2011 49.7977954156222 2012 49.8055406544563 2013 49.8154045902775 2014 49.8257307489898 2015 49.8329437567523 2016 49.8395631924645 2017 49.846684363066 2018 49.8537670085692 2019 49.8620898006017 2020 49.873033568576 2021 49.8854962742844 2022 49.8974696297553 2023 49.9082165601147