Year % of total population 1960 49.8986306360893 1961 49.9051392524989 1962 49.9116072447111 1963 49.917914887479 1964 49.925303793392 1965 49.9314444298889 1966 49.9360035989903 1967 49.9386500265647 1968 49.9393028979402 1969 49.934734425289 1970 49.9234027371719 1971 49.9035958076345 1972 49.8769604652343 1973 49.845438343967 1974 49.8084864510053 1975 49.7693815773731 1976 49.7278827015173 1977 49.683179270492 1978 49.6371281848415 1979 49.5924618429073 1980 49.5533378418032 1981 49.5205716271069 1982 49.491728714645 1983 49.466140888441 1984 49.4444225441957 1985 49.4277473437448 1986 49.414328054513 1987 49.402357953798 1988 49.3961186504186 1989 49.3960363466966 1990 49.3981334063918 1991 49.4004482805846 1992 49.402970184272 1993 49.4067592148472 1994 49.4084801214197 1995 49.4076722761533 1996 49.4077965336952 1997 49.4099310514269 1998 49.414309100854 1999 49.4245935868013 2000 49.4423372764623 2001 49.4667602139568 2002 49.496751740867 2003 49.5265416326229 2004 49.5565489368758 2005 49.5878802501796 2006 49.6217730607611 2007 49.6630283343838 2008 49.708422257836 2009 49.7543222734008 2010 49.8018968571785 2011 49.8508353095912 2012 49.9031026308429 2013 49.9582026280214 2014 50.0127109410939 2015 50.0679892650773 2016 50.124064168759 2017 50.1802014080068 2018 50.2347598938744 2019 50.2863773215262 2020 50.3333262930963 2021 50.3722665415253 2022 50.3975743711909 2023 50.4129725296233