Year % of total population 1960 49.5586435687231 1961 49.5592544104381 1962 49.5551556884878 1963 49.5496468295629 1964 49.5441315993713 1965 49.5387197852041 1966 49.5391313964083 1967 49.5487931004584 1968 49.561520473546 1969 49.5789249044482 1970 49.6026305110927 1971 49.634186597474 1972 49.6698638465336 1973 49.7067895347877 1974 49.742997524886 1975 49.7747680602309 1976 49.8081694265058 1977 49.8311176312227 1978 49.8400760465565 1979 49.8441422260945 1980 49.8377752170837 1981 49.8226363979007 1982 49.8034233897124 1983 49.777361477723 1984 49.7464553850001 1985 49.7169778872318 1986 49.6923235513132 1987 49.6681034778863 1988 49.6397705378161 1989 49.6076980312124 1990 49.5748552424441 1991 49.5511493467646 1992 49.5312485049378 1993 49.5071339899841 1994 49.4827301971728 1995 49.4628820201216 1996 49.4443858513652 1997 49.4236893340224 1998 49.4026525519508 1999 49.3824652431563 2000 49.367238580859 2001 49.3562277709467 2002 49.341380908041 2003 49.3280533465875 2004 49.3225631338916 2005 49.3244503246336 2006 49.3327022174343 2007 49.3416982536405 2008 49.3515321042694 2009 49.3621202187612 2010 49.3701761577643 2011 49.3620093548374 2012 49.3541159891757 2013 49.3613370359943 2014 49.3694357718513 2015 49.3750810895102 2016 49.3809480334679 2017 49.3900857207253 2018 49.4019944811473 2019 49.4129186685184 2020 49.4185695613612 2021 49.4241392478923 2022 49.4327967242268 2023 49.4416288184993