Year	% of total population
1960	3.189193400617718
1961	3.5473062184952853
1962	3.9454754711552296
1963	4.387389780592754
1964	4.878625669114902
1965	5.421950266756895
1966	6.025485220002145
1967	6.694639617516462
1968	7.43718303861523
1969	8.259613422194475
1970	9.179291081273236
1971	10.208262420002201
1972	11.362166335941625
1973	11.98308650193343
1974	12.082448080870067
1975	12.1881924304371
1976	12.298746679093481
1977	12.409988637264489
1978	12.517903501531553
1979	12.615002991689797
1980	12.698484839648563
1981	12.766913070479358
1982	12.819541376258018
1983	12.914532642570226
1984	13.079507834383916
1985	13.228413671770559
1986	13.363079180023204
1987	13.484873317534745
1988	13.601425422544933
1989	13.721271556212788
1990	13.723545811434898
1991	13.651395294913609
1992	13.691397859692236
1993	13.748987560063394
1994	13.816187357066372
1995	13.914203504470265
1996	14.0087191197841
1997	14.12646188111755
1998	14.201871869348249
1999	14.225732752351497
2000	14.291888165084496
2001	14.453479793367455
2002	14.580072489534018
2003	14.60663359724878
2004	14.650198487028124
2005	14.715057164494885
2006	14.768238997923506
2007	14.787513085149998
2008	14.790294469663698
2009	14.787428765643018
2010	14.782321175285725
2011	14.77529020550714
2012	14.772087292880359
2013	14.76884209840775
2014	14.760108758519646
2015	14.741598957784097
2016	14.717183870401312
2017	14.696642512177933
2018	14.680533377342837
2019	14.670761237842106
2020	14.678148749961473
2021	14.714364702208247
2022	14.780825437515391
2023	14.875588170545429