Annual % of total population
1960 32.7589740586754
1961 32.4482239962976
1962 32.1454108629122
1963 31.8962837360464
1964 31.7150749142044
1965 31.6399103077325
1966 31.602172437203
1967 31.5728692476064
1968 31.6206268851065
1969 31.6886123571119
1970 31.5705899962255
1971 31.2828892348468
1972 31.0095664563403
1973 30.7637150440919
1974 30.5369628505312
1975 30.3106385073598
1976 30.0369021666322
1977 29.6641836021311
1978 29.1691985082985
1979 28.6336046675763
1980 28.104241185488
1981 27.5330750005732
1982 26.9277360776189
1983 26.3205614694919
1984 25.7815442561205
1985 25.3571036752606
1986 25.0135837082437
1987 24.7092616698762
1988 24.4678925457043
1989 24.3556538218572
1990 24.3391815328882
1991 24.3481697482402
1992 24.3427416287183
1993 24.2815327301756
1994 24.1168339715846
1995 23.9036639653008
1996 23.7516425755585
1997 23.695654616759
1998 23.7456814889112
1999 23.7912993462896
2000 23.7584730450399
2001 23.680397880852
2002 23.6002819729562
2003 23.4841691020542
2004 23.2420267355721
2005 22.8901566528271
2006 22.5322376999979
2007 22.2573741509258
2008 22.0959895892505
2009 21.9638856482103
2010 21.797149349308
2011 21.6087464219653
2012 21.3942531229658
2013 21.2544921310257
2014 21.192831866624
2015 20.9877807708459
2016 20.820202020202
2017 20.7553179840933
2018 20.685899322932
2019 20.7107060621892
2020 20.6820566631689
2021 20.6680091135124
2022 20.7197280064796
2023 20.7154187668366