Year % of total population 1960 52.3381879946514 1961 52.2944261712152 1962 52.2698568621948 1963 52.2534528713351 1964 52.2739669984999 1965 52.3439071826169 1966 52.4243174131816 1967 52.5066134346041 1968 52.5854639471416 1969 52.6638637005428 1970 52.7039384968303 1971 52.7227531689543 1972 52.7737846819692 1973 52.8380621441757 1974 52.9041701703572 1975 52.9663465292418 1976 53.0129707766839 1977 53.0452142177582 1978 53.0631596946945 1979 53.0792923586497 1980 53.0999090754982 1981 53.1194295900178 1982 53.1403780411154 1983 53.1616927592955 1984 53.0614118295034 1985 52.8532775796335 1986 52.6502039807146 1987 52.4528770997467 1988 52.2553218092588 1989 52.0460116914954 1990 51.8475240020212 1991 51.7270641480969 1992 51.7901606891539 1993 51.967068687912 1994 52.1439646946565 1995 52.3100090645925 1996 52.4757156365512 1997 52.6313572411469 1998 52.7655294052803 1999 52.8833258828789 2000 52.9584971021251 2001 52.9856327494588 2002 52.9749336096897 2003 52.9349983989753 2004 52.8913999062591 2005 52.8477882532647 2006 52.80301625564 2007 52.7579984393289 2008 52.7116791389893 2009 52.6675657132041 2010 52.6250072933077 2011 52.5637330074139 2012 52.4921869653489 2013 52.432285840198 2014 52.3869290420906 2015 52.3532093261138 2016 52.3254273221147 2017 52.3030322984229 2018 52.288651692751 2019 52.2769955599944 2020 52.2619355952689 2021 52.2522232592068 2022 52.2391561703444 2023 52.2238011410634