Year % of total population 1960 49.22041093835137 1961 49.25489195015561 1962 49.27972593327332 1963 49.29524623921593 1964 49.3094290391057 1965 49.32787129020443 1966 49.34393232238822 1967 49.3538413714285 1968 49.36124301255416 1969 49.36618506626631 1970 49.36768805273723 1971 49.36465487888973 1972 49.36084592109574 1973 49.35810103007634 1974 49.35727870728168 1975 49.363390772157025 1976 49.37321723380511 1977 49.38115993004801 1978 49.38865546571587 1979 49.39866410272365 1980 49.406835808452065 1981 49.40963770069226 1982 49.40998129722572 1983 49.41006395082365 1984 49.40973288846992 1985 49.40695010838327 1986 49.401581447983176 1987 49.39319606905365 1988 49.38321836018868 1989 49.371265159694495 1990 49.35681854626775 1991 49.341138416576705 1992 49.32549437541675 1993 49.31227122934197 1994 49.30044983568572 1995 49.28860993580526 1996 49.27700478249018 1997 49.265927313152375 1998 49.2570587155413 1999 49.248339228524145 2000 49.2360060396758 2001 49.22506549149574 2002 49.217477828167105 2003 49.21066412274985 2004 49.20402342375094 2005 49.1971627288482 2006 49.190677012272495 2007 49.18510472275109 2008 49.180451274916514 2009 49.17738738708029 2010 49.1763863183145 2011 49.17583658404599 2012 49.17523567173399 2013 49.17615122978759 2014 49.178815844736164 2015 49.183204280907574 2016 49.18976346042099 2017 49.20010869074551 2018 49.213997531122395 2019 49.22888194037669 2020 49.24810288285801 2021 49.27231453198122 2022 49.29501922407783 2023 49.31487461886049