Annual % of total population
1960 31.078715813398436
1961 31.181558122096007
1962 31.03480595124818
1963 30.87196153156668
1964 30.823716601550498
1965 30.8302432816698
1966 30.491740383661735
1967 29.953760598460047
1968 29.497160473700742
1969 28.98672347886945
1970 28.45859258919078
1971 27.89800996569959
1972 27.265613297803558
1973 26.577834527844036
1974 25.895835771118016
1975 25.215260599663257
1976 24.53637361507957
1977 23.915588354641688
1978 23.35950982545031
1979 22.876286248620904
1980 22.50149210949933
1981 22.237221674768723
1982 22.04769102640097
1983 21.873023770217983
1984 21.694517122053643
1985 21.50833644754841
1986 21.344315598533264
1987 21.2781901427994
1988 21.305365804930265
1989 21.373708271278016
1990 21.471633042028635
1991 21.5849947681543
1992 21.68240813500202
1993 21.738562361990294
1994 21.730331106341048
1995 21.662688841547386
1996 21.57043000853737
1997 21.484671057157417
1998 21.408144841594396
1999 21.32383422353203
2000 21.20474752242785
2001 21.048761454726794
2002 20.889154286833364
2003 20.728422720406336
2004 20.539391565151508
2005 20.322941262856556
2006 20.119690734137894
2007 19.955233338194308
2008 19.817569881933462
2009 19.68229248649776
2010 19.53846078282409
2011 19.41301617118206
2012 19.311288335352316
2013 19.210044092488808
2014 19.104184525678
2015 18.989859352984364
2016 18.877054665732125
2017 18.76411442893941
2018 18.62267213808613
2019 18.452414026765034
2020 18.238804224565932
2021 17.983329283156397
2022 17.70969444373943
2023 17.431635886425575