Year	% of total population
1960	3.7604072862550497
1961	3.763220865836159
1962	3.7775148506271976
1963	3.789071994308172
1964	3.7986617212964173
1965	3.8060545188757393
1966	3.8038129040678936
1967	3.7938643021518015
1968	3.7817387916754175
1969	3.768180914265066
1970	3.7535934838098193
1971	3.7394637416015866
1972	3.7260675582739378
1973	3.7132169342431562
1974	3.6973372078475313
1975	3.685143408147791
1976	3.681090196699749
1977	3.6672585555496084
1978	3.6375530818855157
1979	3.6067089110496213
1980	3.5772963802673257
1981	3.5411297320696917
1982	3.5045689787387855
1983	3.4769693608813816
1984	3.4584913979223852
1985	3.4501387549084717
1986	3.4511827760192344
1987	3.4625127656103523
1988	3.481365664561389
1989	3.5040582792055512
1990	3.518312099329765
1991	3.548828054017757
1992	3.5808602346197285
1993	3.6216692119856737
1994	3.665571558972937
1995	3.70842962797038
1996	3.7683175337130552
1997	3.8438798958019564
1998	3.904876898435904
1999	3.9497129564754148
2000	3.9897549770260903
2001	4.025565993677484
2002	4.062487665909466
2003	4.093624142768817
2004	4.115169511907893
2005	4.126201366179162
2006	4.124820658039864
2007	4.119402490030705
2008	4.11737018553614
2009	4.126160840628497
2010	4.153538590853395
2011	4.207343002967827
2012	4.278300019498286
2013	4.356561239313384
2014	4.443397802245524
2015	4.538815553209757
2016	4.644740825246833
2017	4.7649966644381685
2018	4.895475227723852
2019	5.033754787761092
2020	5.178902106166367
2021	5.314937297801368
2022	5.444364426293165
2023	5.596408605184146