Year	% of total population
1960	4.969051958255525
1961	5.006627625047563
1962	5.044265360462815
1963	5.081549863135392
1964	5.118539459156835
1965	5.154613314908019
1966	5.195149096406091
1967	5.265144243104673
1968	5.333442415056595
1969	5.39867454720104
1970	5.461334318109219
1971	5.520099022623781
1972	5.6065090645559765
1973	5.6932734957130435
1974	5.782364636105359
1975	5.875473182452885
1976	5.99003393630604
1977	6.1071424997882895
1978	6.2279829956903985
1979	6.352515430630527
1980	6.4821468364117685
1981	6.616579652471787
1982	6.7563792169562005
1983	6.900635805343853
1984	7.049743400335716
1985	7.201051569926078
1986	7.356134451686312
1987	7.51235432964872
1988	7.6685926718170565
1989	7.823973405298242
1990	7.978767899247667
1991	8.132583546613139
1992	8.286949684164462
1993	8.438560379720586
1994	8.443113901698265
1995	8.431987626051454
1996	8.420442628975794
1997	8.40897325058565
1998	8.400239618111257
1999	8.395331858315663
2000	8.395694465693468
2001	8.399025354487955
2002	8.373341426942492
2003	8.350085278354982
2004	8.327729004808235
2005	8.305139411513442
2006	8.492747321372141
2007	8.685810027805328
2008	8.885232669313659
2009	9.089030819205599
2010	9.301284203761318
2011	9.524758147852722
2012	9.761323577564287
2013	10.0079985338353
2014	10.266197819158723
2015	10.535162653185525
2016	10.812180923797134
2017	11.096686369215021
2018	11.39210820492666
2019	11.660081994298215
2020	11.934681578790455
2021	12.214446618238226
2022	12.494717462150282
2023	12.768905297982586