Annual % of total population
1960 38.0675281699719
1961 38.8942384691281
1962 39.6678323434408
1963 40.5649289540031
1964 41.6150294787127
1965 42.6330327205712
1966 43.5595747272562
1967 44.3452120143849
1968 44.921775788551
1969 45.2541313128672
1970 45.4445332814995
1971 45.5938893537413
1972 45.6867415461762
1973 45.7072035147758
1974 45.6505839215511
1975 45.4976352762333
1976 45.2502461440162
1977 44.9151232801447
1978 44.5039446291405
1979 44.05649528673
1980 43.6431693152234
1981 43.2987814659552
1982 43.0023173234661
1983 42.7424282050475
1984 42.5146875594395
1985 42.3275036482738
1986 42.1872398360942
1987 42.0632139031309
1988 41.912197634165
1989 41.6782953987942
1990 41.3587652265881
1991 40.9958017368941
1992 40.5829929753876
1993 40.1045407205135
1994 39.5571299805063
1995 38.9581147934405
1996 38.3346563242857
1997 37.6832748229627
1998 36.9650564195932
1999 36.1669969476886
2000 35.2045580144591
2001 34.1162605693357
2002 33.0335813005401
2003 31.9530044962087
2004 30.891065974927
2005 29.8985251567351
2006 29.0662595758166
2007 28.4804173096621
2008 28.1539549430262
2009 28.060917702977
2010 28.0901528943357
2011 28.1183882650388
2012 28.2124476560774
2013 28.4528936663698
2014 28.8188306381117
2015 29.2864976573898
2016 29.8366145913533
2017 30.4513409836696
2018 31.1069784964622
2019 31.748055139331
2020 32.2020073854056
2021 32.431183925479
2022 32.4651170591985
2023 32.2517849131596