Annual % of total population
1960 33.2889163850949
1961 33.1172691980368
1962 32.7505349906661
1963 32.3081201334816
1964 31.8832072354118
1965 31.4961549900157
1966 31.1515088557627
1967 30.8188514915958
1968 30.4359097072665
1969 29.993546620776
1970 29.4597114488115
1971 28.8433354270161
1972 28.1646079611706
1973 27.4199338686821
1974 26.6503460289064
1975 25.8834685293676
1976 25.1421612253501
1977 24.433881049519
1978 23.7458381654259
1979 23.0720305294959
1980 22.4691726796666
1981 21.9795202849352
1982 21.5558172917663
1983 21.1649776316991
1984 20.7947967715344
1985 20.4384024743306
1986 20.09822305563
1987 19.810174302568
1988 19.6025731406415
1989 19.4682285374096
1990 19.4101270227945
1991 19.4292773957217
1992 19.4993355908955
1993 19.5745622621915
1994 19.6171641727921
1995 19.6155754176792
1996 19.5661800954203
1997 19.4588805685158
1998 19.2934401478462
1999 19.1041545386716
2000 18.9103974189764
2001 18.6867542055923
2002 18.4254781580154
2003 18.155040621123
2004 17.8680437675823
2005 17.5472732037771
2006 17.2097557882388
2007 16.8876819912755
2008 16.6288582381536
2009 16.4142470423891
2010 16.2277176225826
2011 16.0601577133143
2012 15.8691325587432
2013 15.6457657544169
2014 15.3894720227291
2015 15.1051564677562
2016 14.9100970381176
2017 14.8747530620308
2018 14.9038083402809
2019 14.9267765214734
2020 14.9296038606602
2021 14.8983407338163
2022 14.7061572977689
2023 14.3548361922303