Year % of total population 1960 49.543407975038775 1961 49.5717940363207 1962 49.587739890881174 1963 49.593069810755104 1964 49.59739441883355 1965 49.605164941510026 1966 49.61248019918085 1967 49.616987235371205 1968 49.619741426408204 1969 49.62024564321696 1970 49.61947264608756 1971 49.6142391180649 1972 49.60538327958137 1973 49.59759445980737 1974 49.59223319224035 1975 49.58974322019852 1976 49.59306019817689 1977 49.5987491766328 1978 49.60246063136672 1979 49.60585522187243 1980 49.60843965562471 1981 49.6111217026239 1982 49.61892122123178 1983 49.63402435947831 1984 49.650935805796635 1985 49.66924528504159 1986 49.678714959462354 1987 49.67640265962965 1988 49.672699923387825 1989 49.665874181357054 1990 49.65694566643188 1991 49.64810088425099 1992 49.644144741547485 1993 49.646524268594625 1994 49.64772385068403 1995 49.647405603097404 1996 49.64688992665126 1997 49.642098506601336 1998 49.63647685789664 1999 49.63140225648743 2000 49.624865962296525 2001 49.620764850353204 2002 49.618949772790856 2003 49.61603808033826 2004 49.61198039047471 2005 49.608266530423386 2006 49.604879060629564 2007 49.601874055462666 2008 49.600146237912185 2009 49.59906569675759 2010 49.59879955460007 2011 49.59973519703691 2012 49.60077102778203 2013 49.60297438409097 2014 49.60561978633236 2015 49.6085438980965 2016 49.6168297727837 2017 49.62975368739303 2018 49.643097533110506 2019 49.65787721903643 2020 49.67831940541721 2021 49.70454434096455 2022 49.72453678274197 2023 49.74655507467491