Annual % of total population
1960 30.08159893867409
1961 29.68045476034306
1962 29.26021628802535
1963 28.843634586084185
1964 28.43061234603899
1965 28.021282360367252
1966 27.617384295136596
1967 27.23780156586488
1968 26.861450309928077
1969 26.488776098391572
1970 26.19834209980082
1971 26.143873653834955
1972 26.14613945305357
1973 26.148171659591874
1974 26.149871484098696
1975 26.151695132976418
1976 26.152562049679574
1977 26.13941899110797
1978 26.12755251287031
1979 26.114873027843572
1980 26.06887329998093
1981 25.926548464263316
1982 25.77323808716811
1983 25.62027355347618
1984 25.46919924939637
1985 25.318307594408726
1986 25.16842566105773
1987 25.03145862102666
1988 24.894635333206608
1989 24.75909854285805
1990 24.566730614446957
1991 24.202227593924913
1992 23.819426011325277
1993 23.441219199237377
1994 23.066807159322217
1995 22.69697386465799
1996 22.328315560403464
1997 21.954794605156916
1998 21.584506808720917
1999 21.218330989379727
2000 20.89757587795204
2001 20.7053582337638
2002 20.53985875195171
2003 20.375225486499538
2004 20.210708091422482
2005 20.048991309527448
2006 19.88590346738251
2007 19.71467014090917
2008 19.54442034016667
2009 19.375247196692065
2010 19.208013935071385
2011 19.037358004152672
2012 18.87569880651223
2013 18.70962518535705
2014 18.540125746550363
2015 18.366907975608076
2016 18.191231856833973
2017 18.010359909818746
2018 17.826951369528704
2019 17.63835246881103
2020 17.446383553902887
2021 17.250019380549514
2022 17.052434564629966
2023 16.852689379400548