Year	% of total population
1960	8.878320367039908
1961	9.050251447841893
1962	9.265419727978607
1963	9.484794206892964
1964	9.709240443569772
1965	9.9362573498357
1966	10.169510969171004
1967	10.408508382215084
1968	10.652789353292743
1969	10.8954785451204
1970	11.058503852731274
1971	11.079125222667379
1972	11.096522809427169
1973	11.10514810478607
1974	11.11130490345831
1975	11.11662974806285
1976	11.12273606086056
1977	11.119231857828963
1978	11.104581738439503
1979	11.086028391735612
1980	11.081093472482577
1981	11.086640748843852
1982	11.080291293364406
1983	11.060532275898941
1984	11.122349229195425
1985	11.317382345587935
1986	11.514089713751
1987	11.705978495946066
1988	11.8918239544123
1989	12.071718306000347
1990	12.253066650818912
1991	12.444867668202251
1992	12.648240180061654
1993	12.859313828897815
1994	13.08724903106382
1995	13.327104720178609
1996	13.575076454227498
1997	13.820218260962863
1998	14.062479628322281
1999	14.307013097238219
2000	14.517630925465314
2001	14.62992119512109
2002	14.734309500679391
2003	14.848106712604892
2004	14.974000344373556
2005	15.104584616822075
2006	15.24397640617482
2007	15.393650836499592
2008	15.554589605800553
2009	15.725347386184039
2010	15.913152359562583
2011	16.112342617271405
2012	16.31527543972429
2013	16.52624282772141
2014	16.7516244473843
2015	16.991681496746608
2016	17.243759732719802
2017	17.522215908259945
2018	17.829584426186678
2019	18.02151429988113
2020	18.216264613980414
2021	18.41743456460051
2022	18.627530815479926
2023	18.839205866833364