Annual % of total population
1960 28.3184017387358
1961 28.2607302440722
1962 28.0437115441912
1963 27.6659425916445
1964 27.1500079839342
1965 26.5336886701664
1966 25.7958347958896
1967 25.0474977809044
1968 24.4870901916817
1969 24.1145477831553
1970 23.8470421871022
1971 23.6569689515046
1972 23.6222596421838
1973 23.7940683535845
1974 24.2024732761933
1975 24.776016174031
1976 25.4521866095201
1977 25.9729544213224
1978 26.2431110455554
1979 26.4918469294532
1980 26.7537297419843
1981 27.0195771591917
1982 26.7491256406518
1983 25.9175155493975
1984 25.1952756632451
1985 24.7036418458606
1986 24.4073223908527
1987 24.2307965228362
1988 24.0903163675963
1989 23.8835585709969
1990 23.5003853962961
1991 22.9941601137267
1992 22.4109876411799
1993 21.8110290904853
1994 21.2427432675514
1995 20.6768552479207
1996 20.1504750551998
1997 19.7331370977456
1998 19.4090814043726
1999 19.0557628332401
2000 18.6141080676253
2001 18.0758056280534
2002 17.4533073865271
2003 16.8555726556841
2004 16.3343574870091
2005 15.9696326570166
2006 15.8025326549878
2007 15.7425775745834
2008 15.7446279423705
2009 15.7790790703047
2010 15.8274113801917
2011 15.854675144292
2012 15.8469076855983
2013 15.7982170922689
2014 15.7327384494636
2015 15.719361407136
2016 15.7671324418547
2017 15.8601924690742
2018 15.9500082190944
2019 16.0020755768312
2020 16.0181197048859
2021 16.0267810949186
2022 15.9188797811963
2023 15.8389372000298