Annual % of total population
1960 18.140284317846803
1961 18.1893868986744
1962 18.262627495419775
1963 18.347638027836584
1964 18.42300788500998
1965 18.505400359777628
1966 18.583716332603146
1967 18.649318305769704
1968 18.71329582290632
1969 18.770657294113064
1970 18.82347592501773
1971 18.881871364433035
1972 18.93833806046244
1973 18.990083928813643
1974 19.018506077078115
1975 19.02000137564305
1976 19.02885614874385
1977 19.053710493517535
1978 19.101591023229027
1979 19.181061703907044
1980 19.2062418857707
1981 19.164835049937228
1982 19.136026363932302
1983 19.12472123248848
1984 19.122889325601243
1985 19.117690560352223
1986 19.110274864061775
1987 19.102331810415425
1988 19.09157251832612
1989 19.260304535925833
1990 19.329191435347717
1991 19.109154182813732
1992 18.897642579215017
1993 18.70307215344827
1994 18.514447198225334
1995 18.328148076791816
1996 18.149343463898322
1997 17.97818878525271
1998 17.81392422201378
1999 17.660089884962485
2000 17.50320317235256
2001 17.407487315922847
2002 17.414049247692205
2003 17.420898772226057
2004 17.41637055604025
2005 17.408027012812944
2006 17.392132351408
2007 17.376106080284178
2008 17.36353214345059
2009 17.347597691229367
2010 17.34394010893775
2011 17.350224289132665
2012 17.463042175275458
2013 17.556510701114174
2014 17.649487131565216
2015 17.7373669972289
2016 17.835957792232605
2017 17.92972104725333
2018 17.99893080337871
2019 18.052272503282882
2020 18.13380492954518
2021 18.248042125292653
2022 18.409189708482216
2023 18.540935687149943