Year	% of total population
1960	7.6497500023476634
1961	7.878583361037807
1962	8.091984724399019
1963	8.305092689714842
1964	8.513569025097834
1965	8.734121966301318
1966	8.921186843599289
1967	9.012519466562871
1968	9.102609928379062
1969	9.193125262026225
1970	9.286277858337051
1971	9.378671749110984
1972	9.46718737750825
1973	9.54951449193178
1974	9.625302287865289
1975	9.581478607021365
1976	9.432371690679249
1977	9.289209552455114
1978	9.082596513455583
1979	8.870125421499587
1980	8.652592417955388
1981	8.430850611665115
1982	8.207970601741112
1983	7.986530001700504
1984	7.768900223572267
1985	7.555876646106781
1986	7.353668098135728
1987	7.203924887797267
1988	7.141062222533515
1989	7.086556595918111
1990	7.0423339943288825
1991	7.006052099753175
1992	6.974382636535859
1993	6.948290118780842
1994	6.931659033183442
1995	6.928198875610112
1996	6.93564390014378
1997	6.948442278405801
1998	6.972765746306693
1999	6.964279376682652
2000	6.955656740663028
2001	6.948633192189285
2002	6.943617734696959
2003	6.938233459362202
2004	6.929299020313202
2005	6.9231224373564215
2006	6.911743593854119
2007	6.887508578713045
2008	6.857917212329263
2009	6.822279451518931
2010	6.782685373611989
2011	6.7406467260520815
2012	6.695873060211141
2013	6.649829926485948
2014	6.603286652421114
2015	6.555698617262548
2016	6.508878717343067
2017	6.464745484465322
2018	6.424360317444076
2019	6.391058379358773
2020	6.369516418541926
2021	6.358730524710178
2022	6.3557996112751365
2023	6.362714245870324