Year % of total population 1960 51.86093997263503 1961 51.82666323510487 1962 51.79264322713271 1963 51.76173962116455 1964 51.72867518516082 1965 51.694909587947194 1966 51.66328864426636 1967 51.63214491425873 1968 51.60246668303085 1969 51.57397400726023 1970 51.54647119042763 1971 51.505279004682116 1972 51.44806330519607 1973 51.388420917637845 1974 51.340794125114776 1975 51.303050242945474 1976 51.25963894527892 1977 51.21800509464473 1978 51.20433371753328 1979 51.25273077942616 1980 51.279922075261695 1981 51.25084343891887 1982 51.23649829047356 1983 51.23209496971442 1984 51.22612787853745 1985 51.22068726188015 1986 51.21230821893865 1987 51.19100900388497 1988 51.16352838858215 1989 51.14051486099437 1990 51.12087704216149 1991 51.11081731022947 1992 51.1102309115716 1993 51.113772662593455 1994 51.11671818365072 1995 51.11508459235095 1996 51.109035028418354 1997 51.10189574068638 1998 51.095263204236936 1999 51.08976988458094 2000 51.08195229879861 2001 51.06848051514563 2002 51.05432406476571 2003 51.04189376543681 2004 51.02975574752812 2005 51.016107312125094 2006 51.00389172281476 2007 50.99399032738297 2008 50.963044291243285 2009 50.91125405234895 2010 50.86188804124096 2011 50.81343746616226 2012 50.765981968995256 2013 50.72156377137443 2014 50.67945560402243 2015 50.636581166772054 2016 50.59483752635473 2017 50.55616092177035 2018 50.51812067917392 2019 50.48098041457845 2020 50.45431719182384 2021 50.43719230043505 2022 50.42529060988192 2023 50.41889990320152