Annual % of total population
1960 43.1310430706124
1961 42.9494185733995
1962 42.8527323247916
1963 42.6611570247934
1964 42.3591594688668
1965 41.9366637462467
1966 41.4062961182652
1967 40.725620154062
1968 39.9492185201066
1969 39.1934940165178
1970 38.4280916650453
1971 37.6186954341044
1972 36.690708599876
1973 35.6158037917646
1974 34.4725334221815
1975 33.3498035921634
1976 32.1853168280427
1977 31.0564462991434
1978 30.1394602999773
1979 29.423765442054
1980 28.9240602892406
1981 28.6966868167408
1982 28.4832689017048
1983 28.1802050782783
1984 27.9012691957086
1985 27.534973169143
1986 27.0591606896659
1987 26.5275407292475
1988 26.0813131980445
1989 26.0056815103219
1990 26.5592780563524
1991 27.6965696098078
1992 28.102405561927
1993 27.5241846323936
1994 26.8469626090041
1995 26.0090850097339
1996 25.1488975911958
1997 24.4795866011874
1998 23.9784245154407
1999 23.608504955852
2000 23.2556312499299
2001 22.8794636703955
2002 22.5041130517209
2003 22.1027820627609
2004 21.6689206164241
2005 21.3578103997545
2006 21.2401876441455
2007 21.1831134346555
2008 21.1304543042573
2009 21.0513849131153
2010 20.7486433828476
2011 20.2250019745676
2012 19.7372480083046
2013 19.3487558320373
2014 19.0455045659015
2015 18.7996067429202
2016 18.5717214384812
2017 18.3348587091053
2018 18.0697706242362
2019 17.7673391737323
2020 17.3510219591029
2021 16.7994067760814
2022 16.240781624313
2023 15.7117720673335