Year	% of total population
1960	5.024837800906434
1961	5.042782944264734
1962	5.0636230737947825
1963	5.078061856911315
1964	5.0971562101421615
1965	5.126382213766134
1966	5.161624644101558
1967	5.203810982785447
1968	5.244262234595764
1969	5.278953574140171
1970	5.314888585102358
1971	5.355478880247423
1972	5.40269159706921
1973	5.455656826583649
1974	5.515361161094734
1975	5.5791839617276615
1976	5.642506795502582
1977	5.708441831696421
1978	5.774584853150818
1979	5.833868746184455
1980	5.868110096901249
1981	5.871872973863771
1982	5.858908208293695
1983	5.8426071251738305
1984	5.842518530416028
1985	5.866612201276071
1986	5.902745196255332
1987	5.941696840739468
1988	5.990881965285538
1989	6.049471355587286
1990	6.107903415512134
1991	6.174457860031433
1992	6.249682993084992
1993	6.331561445177153
1994	6.414952347131054
1995	6.498266648647899
1996	6.577609725416727
1997	6.6534537196309556
1998	6.730733412386713
1999	6.806997958180073
2000	6.88607411159839
2001	6.974289656265106
2002	7.067328780358333
2003	7.157949056075132
2004	7.2433268848817525
2005	7.32638491575038
2006	7.406756593719038
2007	7.474916972986215
2008	7.532193250212348
2009	7.590044040991338
2010	7.651589588008303
2011	7.7345538231337105
2012	7.855196277746226
2013	7.9969034493899525
2014	8.15852465149691
2015	8.33982060972462
2016	8.53558441569046
2017	8.746325584574908
2018	8.967608943989292
2019	9.197471787429963
2020	9.426084409680703
2021	9.61764833126381
2022	9.806043957915135
2023	10.033238825563462