Year % of total population 1960 49.7371091227747 1961 49.6825360106468 1962 49.6324862018841 1963 49.5828454028525 1964 49.5382644209926 1965 49.5024770701069 1966 49.5447542873423 1967 49.6389074996927 1968 49.7004286099716 1969 49.743202767274 1970 49.7805208380387 1971 49.8151886129787 1972 49.8468839588673 1973 49.8719171249989 1974 49.892501776197 1975 49.9084948468333 1976 49.8836424565405 1977 49.8208614178545 1978 49.7628570094755 1979 49.7148853579951 1980 49.6734495198959 1981 49.6372209577331 1982 49.6049219641522 1983 49.585264698707 1984 49.5972816632475 1985 49.619252946593 1986 49.6290990331704 1987 49.6364249174086 1988 49.6409621866382 1989 49.6438518695082 1990 49.6475187330651 1991 49.6521626890775 1992 49.6566445594113 1993 49.6608564856665 1994 49.6637205966746 1995 49.6772792035207 1996 49.7059768518273 1997 49.7396303055844 1998 49.777672099259 1999 49.8188559600174 2000 49.8605118849939 2001 49.9021872967446 2002 49.9453319465799 2003 49.9911416726131 2004 50.0431830823753 2005 50.0859809802217 2006 50.1154474463727 2007 50.1452450499249 2008 50.1739919366165 2009 50.2027724223571 2010 50.2327797462025 2011 50.2502237021288 2012 50.2691736984494 2013 50.302284438161 2014 50.335577692715 2015 50.3691496437161 2016 50.4041147159165 2017 50.4397811512107 2018 50.4761359656772 2019 50.5139960664981 2020 50.5594067551119 2021 50.6069340923462 2022 50.6449153888718 2023 50.6749317298302