Annual % of total population
1960 27.5341866409598
1961 27.5937829563482
1962 27.6547137726015
1963 27.7327148407901
1964 27.8250142513731
1965 27.8942869923337
1966 27.9300244049797
1967 27.9312860493285
1968 27.8985353343375
1969 27.8370032412182
1970 27.7445919553505
1971 27.6411459453718
1972 27.5493856710881
1973 27.4680800775374
1974 27.4174429845088
1975 27.4058726372514
1976 27.4141726280778
1977 27.4012168449954
1978 27.3419723323947
1979 27.2500118167978
1980 27.1251460008464
1981 26.9878452204192
1982 26.8621509424146
1983 26.7393638194552
1984 26.6161279545783
1985 26.5143958726513
1986 26.4122609294671
1987 26.2607203443718
1988 26.0927957496354
1989 25.9116007564507
1990 25.6651360878405
1991 25.3893474909213
1992 25.1497590790847
1993 24.9522700025774
1994 24.8081549995376
1995 24.7357323192968
1996 24.6892155554698
1997 24.6343298093199
1998 24.5657178463246
1999 24.4747500962957
2000 24.3594870276921
2001 24.2263943683903
2002 24.1079607953083
2003 23.9613135450173
2004 23.7530557809597
2005 23.5537644698907
2006 23.3545195741963
2007 23.1213219891965
2008 22.8737647909229
2009 22.6046123446394
2010 22.314982979141
2011 22.0293532541804
2012 21.7604469714554
2013 21.5227788046216
2014 21.3154821022086
2015 21.1415981021609
2016 20.9813736500979
2017 20.7676172100378
2018 20.4907760103319
2019 20.1696938973287
2020 19.7968321883977
2021 19.4366918209202
2022 19.0982161208381
2023 18.7461922401817