Annual % of total population
1960 5.7469962764182645
1961 6.278338896870837
1962 6.600849171071002
1963 6.9345429859094585
1964 7.262846853189458
1965 7.5592343643910445
1966 7.813879512849689
1967 8.033716132117696
1968 8.24455000944199
1969 8.472444524509948
1970 8.72173854080058
1971 8.96220069503897
1972 9.243816460605894
1973 9.552935724446225
1974 9.88260788830915
1975 10.229854967480346
1976 10.59369078765336
1977 10.970544653629972
1978 11.360139600504938
1979 11.748381162086599
1980 12.119473875219775
1981 12.462946855032614
1982 12.806684521074848
1983 13.168981988623552
1984 13.547708650708302
1985 13.955518763929234
1986 14.396706373550968
1987 14.85387428288368
1988 15.328103530390703
1989 15.64435866498993
1990 15.973489833581317
1991 16.315160962504528
1992 16.671906685931752
1993 17.64894105323863
1994 18.493397370676725
1995 18.596324954446317
1996 18.823864685597886
1997 19.159878498873177
1998 19.568250471575706
1999 19.985780435711938
2000 20.428631189678185
2001 20.905713151836213
2002 21.415864091103764
2003 21.93949051106982
2004 22.47313582325077
2005 23.023333053785134
2006 22.879146919431278
2007 22.713213660371157
2008 22.561720548167113
2009 22.423430412538696
2010 22.313441182131985
2011 22.207613586791595
2012 22.114475499286453
2013 22.029897995125122
2014 21.952605948397608
2015 21.88138487392799
2016 21.814407740459455
2017 21.75156743554365
2018 21.69521115481306
2019 21.658251137255018
2020 21.650703931736505
2021 21.682256525837584
2022 21.760453146841137
2023 21.887110593022886