Annual % of total population
1960 39.2344820349857
1961 38.9122169891619
1962 38.6520416182486
1963 38.4316522935429
1964 38.2347781373824
1965 38.0593450980166
1966 37.9104592102307
1967 37.790746274895
1968 36.4965212424268
1969 34.3621797276328
1970 32.7216489311738
1971 31.5895191182916
1972 30.7930310320923
1973 30.2224456794989
1974 29.8045552946916
1975 29.4830270485136
1976 29.2461293731286
1977 29.1628764353954
1978 29.2265200917501
1979 29.3694108219257
1980 29.5568848811891
1981 30.1811521750986
1982 31.1532414955268
1983 32.0335301703659
1984 32.8268610924911
1985 33.5153268925204
1986 33.7158038724121
1987 33.5255398630251
1988 33.3598229118224
1989 33.2147959639253
1990 33.086265249446
1991 32.9697572624345
1992 32.8607793761645
1993 32.7575334505173
1994 32.6576282597346
1995 32.5535705188358
1996 32.3776059329857
1997 32.1590579286622
1998 31.9744071643508
1999 31.8180130638182
2000 31.6836486549612
2001 31.5668933859611
2002 31.4652051446821
2003 31.3747183319641
2004 31.2913328920986
2005 30.9642645993581
2006 30.0241031044586
2007 28.8037511000193
2008 27.8159052811795
2009 27.2054278909457
2010 27.1969144179912
2011 27.5748976263541
2012 27.9354028848805
2013 28.2811388270385
2014 28.6123927124539
2015 28.927601400442
2016 29.2253072875454
2017 29.5073186847893
2018 29.7788585747156
2019 30.0471891213492
2020 30.277091624908
2021 30.4651769940562
2022 30.6465995751144
2023 30.8219476758695