Year % of total population 1960 50.2898266808077 1961 50.2747365824008 1962 50.2611114987319 1963 50.2492914457408 1964 50.2392129768225 1965 50.2305080273895 1966 50.2228735311061 1967 50.2159593926561 1968 50.2092724077846 1969 50.2025623063278 1970 50.1951369143969 1971 50.1500076833885 1972 50.0748681873909 1973 50.0074916433548 1974 49.9413004066317 1975 49.8744153407792 1976 49.8018089991682 1977 49.7418245539591 1978 49.6974837672705 1979 49.6504868543623 1980 49.6038752481974 1981 49.5580718709681 1982 49.5128868236189 1983 49.4701188160817 1984 49.4291550209231 1985 49.3893138110925 1986 49.3498686410835 1987 49.3106462346305 1988 49.2734137922577 1989 49.2371358591258 1990 49.2054055321394 1991 49.1747362482986 1992 49.1429816637959 1993 49.113471127763 1994 49.0860258568861 1995 49.0591863658082 1996 49.0314380751629 1997 49.0060632672274 1998 48.9837748225432 1999 48.9628608807138 2000 48.9408148126639 2001 48.9319265509503 2002 48.9375599359637 2003 48.9435883415476 2004 48.9497734747623 2005 48.954972592525 2006 48.9580592699996 2007 48.9592414051274 2008 48.9579688883813 2009 48.9545033946505 2010 48.9515966161604 2011 48.9547415923723 2012 48.9600189654249 2013 48.9619994208236 2014 48.962088085789 2015 48.9594893285676 2016 48.9549130667979 2017 48.9473943256805 2018 48.9341784141371 2019 48.9163975456719 2020 48.8795880757187 2021 48.8189650209765 2022 48.778777941498 2023 48.7650068136012