Year	% of total population
1960	6.344172817220817
1961	6.62333009805949
1962	6.916402601405011
1963	7.228098179154154
1964	7.554447926042377
1965	7.889390381878125
1966	8.241516268626166
1967	8.609890640410981
1968	8.995380156783133
1969	9.396816197563352
1970	9.816971927092991
1971	10.256118686906303
1972	10.519157069569927
1973	10.749102861734446
1974	10.982970000707661
1975	11.216826420219492
1976	11.451643726129005
1977	11.686067184376952
1978	11.922908515110615
1979	12.162672541458628
1980	12.407157768570395
1981	12.652796423455657
1982	12.900319241388274
1983	13.273818684007423
1984	13.684498455211594
1985	14.103826747379209
1986	14.533896503849276
1987	14.974765489681024
1988	15.428748318838384
1989	15.894935276447598
1990	16.378581760207563
1991	16.88502283098561
1992	17.417656381404928
1993	17.832748429744864
1994	18.26548728835917
1995	18.712663799428263
1996	19.173414435680776
1997	19.318973738031215
1998	19.470081241589025
1999	19.623225456243382
2000	20.25624908420527
2001	20.913133032446527
2002	21.60383377286226
2003	22.32180335430983
2004	23.060353028386242
2005	23.821881276133407
2006	24.60636880701312
2007	25.423343982788772
2008	26.27661719849107
2009	27.15919552243131
2010	21.748085926070416
2011	22.072816283033923
2012	22.311147041130276
2013	22.559112447406278
2014	22.817366034300292
2015	23.084599541621415
2016	23.361744224694597
2017	23.64772708130303
2018	23.94353612162121
2019	24.2301153413513
2020	24.529953255567158
2021	24.84304746274078
2022	25.16423829580951
2023	25.479875371468065