Year	% of total population
1960	4.95427874851853
1961	4.77576244053368
1962	4.62018810844668
1963	4.47512415401788
1964	4.33867390450091
1965	4.20817848574943
1966	4.08207104904129
1967	3.96160890226733
1968	3.8486891257814
1969	3.74427020348729
1970	3.64909352838125
1971	3.5624922526505
1972	3.48351850238999
1973	3.41121106981837
1974	3.34551155357402
1975	3.28661298253577
1976	3.23135154684313
1977	3.17650483774296
1978	3.12740930832492
1979	3.08543548601069
1980	3.0451835662268
1981	3.00231919236258
1982	2.95422439452352
1983	2.91669094107536
1984	2.89878704880622
1985	2.89044340127234
1986	2.89041540596532
1987	2.89922788605764
1988	2.91559154337516
1989	2.939593224153
1990	2.96949475326228
1991	3.00527358948194
1992	3.04591174238283
1993	3.08745018905692
1994	3.12807368380074
1995	3.16807279754611
1996	3.20647481021497
1997	3.2420061802848
1998	3.27324350099359
1999	3.29993617148993
2000	3.32378280775395
2001	3.34699151384258
2002	3.36886677078757
2003	3.38865171394672
2004	3.4027773822472
2005	3.41105033306997
2006	3.39114962328393
2007	3.34491289199532
2008	3.34465637482284
2009	3.37806639191646
2010	3.40498655571753
2011	3.44855355082478
2012	3.53387565524482
2013	3.7154199347729
2014	3.94687795557564
2015	4.13199773863064
2016	4.25881020775299
2017	4.37176522844491
2018	4.45719424399033
2019	4.49421184723457
2020	4.55117416598229
2021	4.6231430925945
2022	4.68026155728827
2023	4.71967263462434