Year % of total population 1960 50.27451474886196 1961 50.27237362819756 1962 50.27751127388934 1963 50.28889591009512 1964 50.29960874958767 1965 50.30686866126093 1966 50.31454105612806 1967 50.322268773844144 1968 50.33052148222412 1969 50.33963560169478 1970 50.34544743277456 1971 50.355411476082445 1972 50.37201620948098 1973 50.38791817084284 1974 50.40230407009523 1975 50.41365838337361 1976 50.41935823131574 1977 50.4236062600468 1978 50.42906567598901 1979 50.43158422239335 1980 50.43413158985595 1981 50.43869238279869 1982 50.43986555916646 1983 50.436237863551746 1984 50.43116674512491 1985 50.425174415716754 1986 50.42485649213726 1987 50.43212507156406 1988 50.440084176037296 1989 50.44898861019258 1990 50.458653246093704 1991 50.46759609776743 1992 50.474001908094735 1993 50.47699962315701 1994 50.48082588279653 1995 50.485925818871635 1996 50.492033517347686 1997 50.50147613777247 1998 50.51192560261976 1999 50.52153439080014 2000 50.53217184305095 2001 50.54087819633469 2002 50.546887645459485 2003 50.55247389395934 2004 50.557478186012496 2005 50.56139030634557 2006 50.56479626037122 2007 50.56801867115837 2008 50.569904050764144 2009 50.57077019364758 2010 50.57175580126526 2011 50.572928246156266 2012 50.57388381858252 2013 50.57417526357777 2014 50.57472535363334 2015 50.57498983823906 2016 50.57182329857225 2017 50.56569583883568 2018 50.55900217127481 2019 50.55072560707123 2020 50.53730128933621 2021 50.518427395779845 2022 50.504143607816104 2023 50.489478306350215