Year	% of total population
1960	4.060626021361527
1961	4.084462671572282
1962	4.154173782992626
1963	4.281147058359662
1964	4.373612011577352
1965	4.405603046334383
1966	4.426500967259002
1967	4.455500913100927
1968	4.489664122811236
1969	4.526586229865571
1970	4.5667839916716835
1971	4.608603361751593
1972	4.658071898696317
1973	4.719748586584239
1974	4.7874176026967366
1975	4.859513553776906
1976	4.935285134907672
1977	5.011730512980948
1978	5.086303765155919
1979	5.158228663534498
1980	5.209255949926154
1981	5.241937294536901
1982	5.273206493890424
1983	5.30197276204402
1984	5.328901951669001
1985	5.354119892627849
1986	5.378765465698889
1987	5.40282315699076
1988	5.424770746377591
1989	5.443733301779955
1990	5.460114923808495
1991	5.466120541600635
1992	5.454075947292556
1993	5.439779109051159
1994	5.438909871671249
1995	5.455227240734955
1996	5.485448533120946
1997	5.529053864989639
1998	5.587846950023928
1999	5.660180664080059
2000	5.74677236075311
2001	5.828805908532733
2002	5.900951544367666
2003	5.978033524046347
2004	6.040176694282479
2005	6.088934183952905
2006	6.145672480864968
2007	6.210608214288605
2008	6.286163016416925
2009	6.374921485331874
2010	6.471390654895914
2011	6.568167548731133
2012	6.667732754498238
2013	6.776653993149281
2014	6.8844525695766166
2015	7.011397337952958
2016	7.167466962374292
2017	7.334440052537734
2018	7.492466493075411
2019	7.6813277386313565
2020	7.912261302188282
2021	8.112064095260866
2022	8.31146144491117
2023	8.568913370208659