Year % of total population 1960 49.1518640289357 1961 49.1706578908706 1962 49.1996107967855 1963 49.2350309874284 1964 49.2740226828964 1965 49.3179892207044 1966 49.3660390624741 1967 49.4159689208558 1968 49.4524696741457 1969 49.4091191358838 1970 49.2994273635059 1971 49.2194311945428 1972 49.1937438188118 1973 49.1947659788626 1974 49.1836397552296 1975 49.1446081719398 1976 49.056884057971 1977 48.9890447606098 1978 48.9762465573383 1979 48.9422287122388 1980 48.9276447829981 1981 48.9533591513723 1982 48.9793850022645 1983 49.0244815052384 1984 49.0847637536837 1985 49.1361835619841 1986 49.1773980809311 1987 49.2126942948967 1988 49.2424470616585 1989 49.2687658891218 1990 49.2944888722777 1991 49.3196617143614 1992 49.3429530013923 1993 49.3654802820259 1994 49.4557326775212 1995 49.6124763705104 1996 49.7733331273506 1997 49.9393959410142 1998 50.1081408975853 1999 50.2753313212087 2000 50.4758553936848 2001 50.7025178305782 2002 50.9163721713532 2003 51.117856450896 2004 51.3062787784911 2005 51.4782717300047 2006 51.630738509727 2007 51.7628323359478 2008 51.8748787653107 2009 51.9705160364324 2010 52.0528558533207 2011 52.1702132120903 2012 52.3191324658439 2013 52.4532112053546 2014 52.5718759433995 2015 52.6729192047651 2016 52.7581496389733 2017 52.8267160407364 2018 52.8801517351479 2019 52.921094298826 2020 52.8901681589976 2021 52.8230627006007 2022 52.774600157143 2023 52.7190347302777