Year	% of total population
1960	5.171706549747753
1961	5.218821348403398
1962	5.263429565649453
1963	5.358401153806532
1964	5.617454056034612
1965	5.885440470749543
1966	6.165925215664178
1967	6.45845131804506
1968	6.764669562972194
1969	7.085358330449437
1970	7.421694066380499
1971	7.776360051857228
1972	8.150543087781582
1973	8.539957917747582
1974	8.949584889905873
1975	9.294725378577159
1976	9.588632715284932
1977	9.886372054681381
1978	10.186141686526518
1979	10.492958856156546
1980	10.805656579094675
1981	11.123508484458446
1982	11.44820310743455
1983	11.772580138229609
1984	12.099571716369423
1985	12.431099324988752
1986	12.579194398421825
1987	12.560611875026122
1988	12.540829319944827
1989	12.54543281905518
1990	12.374427450207936
1991	12.540562047741876
1992	13.093557090603747
1993	13.449157981408803
1994	13.734448555986589
1995	14.058719993228724
1996	14.344787768236888
1997	14.521655707977338
1998	14.745723290580285
1999	15.040987498729091
2000	15.062825216123588
2001	14.582252440552956
2002	14.13474762130716
2003	13.928124708577444
2004	13.81681804931534
2005	13.821535035597062
2006	13.909749329319867
2007	13.998201430066828
2008	14.042844524418555
2009	14.056345192099098
2010	14.063437495436323
2011	14.083662702640575
2012	14.113364091820578
2013	14.151413546203878
2014	14.200088282809723
2015	14.26097569945096
2016	14.321143039691014
2017	14.381330539044606
2018	14.449922347261216
2019	14.520305392385671
2020	14.5968469644655
2021	14.683264611328283
2022	14.782555040729898
2023	14.891983840005315