Annual % of total population
1960 21.76843330762837
1961 22.2588696185424
1962 22.83730810928155
1963 23.483538481949378
1964 24.15110918615266
1965 24.809372921499083
1966 25.417978973143907
1967 26.021558049619024
1968 26.684334837968986
1969 27.439732791170492
1970 28.25648604097486
1971 28.915101240669838
1972 29.23378051145801
1973 29.6125045721365
1974 30.02264444340797
1975 30.265324614125994
1976 30.32375396570583
1977 30.457543063694935
1978 30.59402485206988
1979 30.746456578781178
1980 30.982229202888668
1981 31.126591190572857
1982 30.981816970874853
1983 30.848431650757156
1984 30.741361917039356
1985 30.6682101406239
1986 30.61290051692484
1987 30.556591882782975
1988 30.49166268389615
1989 30.378498513999407
1990 30.104046449118506
1991 29.80831162856094
1992 29.69030569202354
1993 29.624455626282515
1994 29.58479098389582
1995 29.555072720495527
1996 29.533377950380817
1997 29.495869108892297
1998 29.440617045328725
1999 29.435689423732203
2000 29.423380463543307
2001 29.342278293064382
2002 29.217790974921897
2003 29.131072549864705
2004 29.042045191385483
2005 28.94006669874002
2006 28.836375792374152
2007 28.746153427718017
2008 28.65312834874593
2009 28.56115192765078
2010 28.507659283174576
2011 28.53313659133685
2012 28.671035275564687
2013 28.862764245941097
2014 29.03864368712424
2015 29.213466220825048
2016 29.31802618993685
2017 29.35885859540764
2018 29.40123631285614
2019 29.418718245124648
2020 29.474466703537537
2021 29.834357487747187
2022 30.24652824098854
2023 30.444678971113166