Year % of total population 1960 51.5035904227149 1961 51.5224983653777 1962 51.5216414257376 1963 51.5051925098479 1964 51.4862177519271 1965 51.4656310415745 1966 51.4468259485445 1967 51.4293431030395 1968 51.4124570579367 1969 51.3995857815579 1970 51.3865548361718 1971 51.3722744825271 1972 51.3699457705877 1973 51.3776751722733 1974 51.3863233450439 1975 51.3978702830902 1976 51.4126187227903 1977 51.4306347960716 1978 51.451954771529 1979 51.474633497387 1980 51.4299208361263 1981 51.3833924346014 1982 51.3992466278182 1983 51.4110476071764 1984 51.4227050758776 1985 51.4346066619801 1986 51.4451353654318 1987 51.455702783658 1988 51.4659431487998 1989 51.476625808892 1990 51.4881125373329 1991 51.5011782217109 1992 51.5142570313453 1993 51.5258964856599 1994 51.5401102025165 1995 51.5558197058402 1996 51.5699993390039 1997 51.5824722709211 1998 51.5958098684941 1999 51.608713506146 2000 51.6170524177613 2001 51.6204467294171 2002 51.6143138063799 2003 51.5955554336578 2004 51.5690617499168 2005 51.5504758120103 2006 51.5482269412633 2007 51.5571072420686 2008 51.5684020397868 2009 51.5794050186424 2010 51.5965344114124 2011 51.6068383221977 2012 51.5895949411652 2013 51.5597246936747 2014 51.5372108694374 2015 51.5035585365913 2016 51.4518528750141 2017 51.389924930378 2018 51.3272188976062 2019 51.2953872235188 2020 51.2812858510167 2021 51.2608091693751 2022 51.2362690178784 2023 51.2069267933036