Year	% of total population
1960	7.97696608774914
1961	8.08740399973452
1962	8.21934959508444
1963	8.32431304953848
1964	8.39103512660296
1965	8.57943195662164
1966	8.80802157479182
1967	8.97034778760932
1968	9.18155047411007
1969	9.39520772395457
1970	9.67016506861214
1971	9.9026109765757
1972	10.0471218686271
1973	10.202294942152
1974	10.3225267491031
1975	10.5145838314883
1976	10.7191319200482
1977	10.872252100302
1978	11.0581462355019
1979	11.258882953685
1980	11.4567622508221
1981	11.6181374960027
1982	11.7598263038732
1983	11.8600485668437
1984	11.9455601149254
1985	12.1305359248779
1986	12.4057370922741
1987	12.689941875931
1988	12.9885486929966
1989	13.3201058709285
1990	13.655293821159
1991	13.9934744353467
1992	14.3231259526813
1993	14.6074454997111
1994	14.8669641048364
1995	15.1331001317896
1996	15.3927006749345
1997	15.6410970422235
1998	15.8781022348484
1999	16.0615971143032
2000	16.2734923233545
2001	16.5295113615076
2002	16.7497698068343
2003	16.9588871022897
2004	17.201387570297
2005	17.4287578310047
2006	17.6203710821181
2007	17.8095728277683
2008	18.0247105165925
2009	18.2933458013776
2010	18.5936998419308
2011	18.9247130052118
2012	19.2682800729817
2013	19.6713709687053
2014	20.1267354779403
2015	20.5529039276739
2016	20.9631111863411
2017	21.3650845546896
2018	21.7183171547454
2019	22.0214767399134
2020	22.2967255949746
2021	22.5606731050214
2022	22.8970539482312
2023	23.3043916115034