Annual % of total population
1960 41.3043668122271
1961 41.4923970186997
1962 41.6594750801631
1963 41.7643311381602
1964 41.8613029553012
1965 41.9847565395688
1966 42.1798332711046
1967 42.4881634923545
1968 42.8432418384399
1969 43.0702970554949
1970 42.8075376056853
1971 42.2415545898408
1972 41.7530255336806
1973 41.2640845616156
1974 40.6663919318995
1975 39.8895884209014
1976 38.9706738607251
1977 37.9913410454868
1978 36.9919842988064
1979 36.017153846855
1980 35.1024010904906
1981 34.3880713560322
1982 33.8615234530626
1983 33.4011733576797
1984 33.0850949138768
1985 32.8822656392949
1986 32.6737864503486
1987 32.4443114334671
1988 32.21636273932
1989 32.0231268303248
1990 31.7935635937771
1991 31.5559258487815
1992 31.4587415439449
1993 31.4821915954255
1994 31.4515648995821
1995 31.3067093078377
1996 31.105080632599
1997 30.8817247288185
1998 30.6442970469058
1999 30.3239595155985
2000 29.8927123139311
2001 29.4418522810701
2002 29.0625505236496
2003 28.7257692608803
2004 28.3742288819681
2005 28.0245483088176
2006 27.6953024758659
2007 27.3597052002354
2008 27.0441985143125
2009 26.8087915849876
2010 26.3984440300907
2011 25.7671649689112
2012 25.1573701581685
2013 24.5123816932452
2014 23.8730658826976
2015 23.2744033257151
2016 22.645788323297
2017 22.0050373414866
2018 21.3702689555904
2019 20.7489921074163
2020 20.1664815368359
2021 19.6225596369747
2022 19.062695129566
2023 18.4892523087027