Annual % of total population
1960 37.8552885781044
1961 37.4214021465168
1962 37.0462390516649
1963 36.9510339103418
1964 37.0593023739116
1965 37.1754049650441
1966 37.7412257082093
1967 38.7970792268719
1968 39.6549912231062
1969 40.1504065494317
1970 40.4068806583023
1971 40.543608346205
1972 40.4413761910479
1973 39.9647324107316
1974 39.4209436909193
1975 38.9158849008554
1976 38.3568599125104
1977 37.7169159143236
1978 36.9113159272347
1979 36.0457475100981
1980 35.1877627752915
1981 34.2713523471977
1982 33.1955344603972
1983 32.0657402448613
1984 31.0095864806344
1985 29.9947240656859
1986 29.064683910774
1987 28.1639928430081
1988 27.4286991532377
1989 26.9692598409107
1990 26.6568462493864
1991 26.500057410342
1992 26.4712704403654
1993 26.4826143864815
1994 26.4904728744103
1995 26.4479969019282
1996 26.3416709237355
1997 26.197572099076
1998 26.0275158102743
1999 25.8305873678152
2000 25.5897773530298
2001 25.3061028502174
2002 24.9867223517419
2003 24.6503147282555
2004 24.3166751082407
2005 23.9525115615621
2006 23.534649891951
2007 23.0853431933135
2008 22.6329554232333
2009 22.1881943862763
2010 21.719790206245
2011 21.2387355049154
2012 20.8054638884882
2013 20.4290755804608
2014 20.1023110163678
2015 19.8277279509098
2016 19.5888723935156
2017 19.3871440285779
2018 19.2320393482377
2019 19.1085122384142
2020 19.0133633880735
2021 18.9482875517545
2022 18.8979450307221
2023 18.8450924601125