Year % of total population 1960 50.422122523985 1961 50.4008843977564 1962 50.3791641198044 1963 50.3583914798052 1964 50.3375676761493 1965 50.3146065633205 1966 50.2898738817508 1967 50.2646203758134 1968 50.2386954702816 1969 50.2120060022368 1970 50.1833910594835 1971 50.1534026821421 1972 50.1240130905791 1973 50.0652688954614 1974 49.9848947275802 1975 49.9112228990402 1976 49.8371680830755 1977 49.7640958761477 1978 49.6944983021984 1979 49.631311439064 1980 49.5779353226075 1981 49.5331930367632 1982 49.5056706106816 1983 49.4930122430813 1984 49.4812809710136 1985 49.4705696340374 1986 49.4612113716427 1987 49.4528289271339 1988 49.445211353444 1989 49.4384362769811 1990 49.4329048000897 1991 49.4287422540713 1992 49.426251873078 1993 49.4258130382504 1994 49.4272352396425 1995 49.4303654909504 1996 49.435580491356 1997 49.4418869436848 1998 49.4496845605591 1999 49.459762584035 2000 49.4711854575659 2001 49.4834253438666 2002 49.498232482968 2003 49.5181248638678 2004 49.5410725060022 2005 49.5631087637884 2006 49.5838870394377 2007 49.6031498288506 2008 49.6205768210151 2009 49.6367429865882 2010 49.6517967143922 2011 49.6654910326751 2012 49.6780522821484 2013 49.6897589137699 2014 49.7012094298852 2015 49.713108717293 2016 49.7256652913894 2017 49.7383643903676 2018 49.750718883161 2019 49.7638447381373 2020 49.7788612407733 2021 49.8006279722886 2022 49.826567704075 2023 49.8449324086019