Annual % of total population
1960 32.7789184310863
1961 32.9446070134826
1962 32.9613497590104
1963 32.9053324651007
1964 32.8279256772823
1965 32.7196211522805
1966 32.5793039373317
1967 32.4427312148936
1968 32.3193730127072
1969 32.1498984783871
1970 31.9055133556806
1971 31.6398127426138
1972 31.3496147391298
1973 30.9767405501775
1974 30.5243965121736
1975 30.0554236764674
1976 29.5664988816463
1977 28.9877287918466
1978 28.3596742849353
1979 27.7579804486149
1980 27.1991719538283
1981 26.6817217177945
1982 26.1578932995074
1983 25.6208485735414
1984 25.1097616110563
1985 24.6443968534023
1986 24.2125429392526
1987 23.8051608896694
1988 23.4835654502018
1989 23.2965229898418
1990 23.2611460243655
1991 23.1808286939421
1992 23.0770297765432
1993 23.080233547917
1994 23.0817115292495
1995 23.0689897609974
1996 23.0409224189896
1997 23.0078535917192
1998 22.9627269396364
1999 22.8890175501797
2000 22.7749265550029
2001 22.6047758131119
2002 22.3786074170649
2003 22.1196654378758
2004 21.8456202068477
2005 21.5462058115347
2006 21.2812722937776
2007 21.1215508064207
2008 21.0298554881376
2009 20.9523421080245
2010 20.870348685451
2011 20.7676931044407
2012 20.6296215130793
2013 20.4402441534304
2014 20.2260203646497
2015 20.0301486301325
2016 19.8651330171863
2017 19.7361433543924
2018 19.5722312952333
2019 19.3069759150673
2020 19.0681692154534
2021 18.8906428265439
2022 18.7042823171748
2023 18.5143664538137