Year % of total population 1960 49.8005807450258 1961 49.8181024447031 1962 50.0459581055585 1963 50.2551415674163 1964 50.4459231304002 1965 50.6207054731028 1966 50.7839544818443 1967 50.9427006764349 1968 51.1009792683607 1969 51.2644749101557 1970 51.4347875317449 1971 51.4950046431202 1972 51.4442893967483 1973 51.3932488157587 1974 51.3426075703656 1975 51.2909091645438 1976 51.2399609180211 1977 51.1905196728963 1978 51.1408343087528 1979 51.0860935241546 1980 51.025956662808 1981 50.8558676290235 1982 50.5605940192916 1983 50.258588635621 1984 49.9810189051705 1985 49.7254084115398 1986 49.4913035784047 1987 49.2787228037767 1988 49.0843755200661 1989 48.9064315697109 1990 48.742672609479 1991 48.6039901763294 1992 48.5162607084352 1993 48.4592027569396 1994 48.4025628956297 1995 48.3485065840395 1996 48.2951889328884 1997 48.2416808355599 1998 48.1849485166294 1999 48.1199385219897 2000 48.0534665752866 2001 47.9991892913587 2002 47.9743809280242 2003 47.9706312846867 2004 47.9684730058524 2005 47.9664114575978 2006 47.9608976951877 2007 47.9547086333029 2008 47.9598818988428 2009 47.9686789277026 2010 47.9737016348554 2011 47.952112335662 2012 47.8598614195063 2013 47.7265603144054 2014 47.5980978769115 2015 47.4765091289726 2016 47.3624834048203 2017 47.2570853213782 2018 47.1596381516795 2019 47.066162587979 2020 46.9707208372826 2021 46.938933043211 2022 46.9210320382987 2023 46.852157710939