Annual % of total population
1960 30.9537446101427
1961 30.9032992287686
1962 30.7224819032039
1963 30.601567443519
1964 30.7218735506281
1965 30.9456489462737
1966 31.0213259244364
1967 30.9794777235798
1968 30.9193407602246
1969 30.931221844632
1970 31.0122675108825
1971 31.0661390174503
1972 31.0554784707886
1973 31.0633902918741
1974 31.0851730258704
1975 31.049588186146
1976 30.9616444308647
1977 30.8550520538004
1978 30.7127422160952
1979 30.5560461565358
1980 30.4325929184726
1981 30.316796977366
1982 30.1757469549828
1983 29.9983328068766
1984 29.7220712755423
1985 29.3440326501832
1986 28.9441882975632
1987 28.5339101232319
1988 28.0966572613728
1989 27.6288000982972
1990 27.1017648175253
1991 26.5648768711636
1992 26.0385753522805
1993 25.4753927292213
1994 24.8430106499766
1995 24.1557437640418
1996 23.508121488507
1997 22.9354422207876
1998 22.4522632790628
1999 22.0693287998922
2000 21.7261012050968
2001 21.3729081451171
2002 21.0835698461132
2003 20.9200104579654
2004 20.7715017617386
2005 20.5787103343662
2006 20.3654877737625
2007 20.2854053617638
2008 20.4440870835175
2009 20.7521346817659
2010 21.1021452796223
2011 21.3799710903353
2012 21.5203360681776
2013 21.5379098646453
2014 21.4750979924462
2015 21.3611823154213
2016 21.2000752790494
2017 20.9914763728601
2018 20.7463346314319
2019 20.4581926663275
2020 20.1778202263229
2021 19.9131720159486
2022 19.5842275754147
2023 19.1909050829114