Year	% of total population
1960	3.4979124500584042
1961	3.5943400137639707
1962	3.706624824624606
1963	3.8246675350011348
1964	3.952518396192454
1965	4.087319244088374
1966	4.231156221303771
1967	4.410431946123827
1968	4.602830793942998
1969	4.809959986358655
1970	5.027509175742582
1971	5.265612767591089
1972	5.517914610828938
1973	5.767816436864759
1974	6.022513379110068
1975	5.670035615559409
1976	5.855801971251235
1977	6.041924921697818
1978	6.218261875114884
1979	6.382414272282027
1980	6.602724982993291
1981	6.82564090342161
1982	6.992986329793797
1983	7.164244164474615
1984	7.3555367530593605
1985	7.550406533292799
1986	7.7603415150387205
1987	7.976475281782717
1988	8.202909668858647
1989	8.426218337360314
1990	8.665453661610565
1991	8.902965105418723
1992	9.004860124187696
1993	9.099385474865358
1994	9.205384579683836
1995	9.328470735910308
1996	9.5382972189425
1997	9.680649064177597
1998	9.818546016278026
1999	9.944787320738701
2000	10.108056098755007
2001	10.267635471921476
2002	10.403324492041628
2003	10.541288724305918
2004	10.693604358640302
2005	10.810672223632467
2006	10.93483600773028
2007	11.014657603292532
2008	11.178715866466396
2009	11.353845869501066
2010	11.446274356623551
2011	11.609056806803936
2012	11.769922485584036
2013	11.93339640172756
2014	12.093860958829847
2015	12.239151026491239
2016	12.383398351479457
2017	12.527030738948543
2018	12.671040030502704
2019	12.815621248162563
2020	12.962891352326745
2021	13.119206382215824
2022	13.291128889201655
2023	13.471313743729008