Annual % of total population
1960 43.0620163480956
1961 43.3849093103273
1962 43.7085939910994
1963 44.0401244090155
1964 44.3619983224939
1965 44.7492901995731
1966 45.148201930469
1967 45.3705420757774
1968 45.3980294211128
1969 45.2623612396197
1970 44.9934960043675
1971 44.4208986044941
1972 43.4748275706066
1973 42.349940771221
1974 41.1825892881887
1975 40.0339861074333
1976 38.9614523203264
1977 38.0027748047727
1978 37.1627502175805
1979 36.4330185046575
1980 35.7944814462417
1981 35.3010297287308
1982 34.9241848819872
1983 34.5789301397699
1984 34.2750481551939
1985 34.0241334974003
1986 33.8338190477037
1987 33.7177389192705
1988 33.6856413699359
1989 33.7332204788853
1990 33.8235876761268
1991 33.8816618884417
1992 33.7794650747561
1993 33.4735789025116
1994 33.0345855232329
1995 32.5110860223124
1996 31.9138814961849
1997 31.2416062392504
1998 30.543649026333
1999 29.8812004926802
2000 29.2738550718119
2001 28.6996221878051
2002 28.1004430564548
2003 27.2197533846489
2004 25.9258792658477
2005 24.5717196960709
2006 23.4025297109468
2007 22.4108917361504
2008 21.5465754516508
2009 20.721182073886
2010 20.4502636480452
2011 20.5523246460415
2012 20.1465051947464
2013 19.8996094867688
2014 20.2402957133688
2015 20.3692419733038
2016 20.1922306143108
2017 19.9932524913614
2018 19.9291083172336
2019 20.0682845571359
2020 20.298970739826
2021 20.3771974395624
2022 20.1867163689443
2023 19.882740568135