Year	% of total population
1960	3.737961374224043
1961	3.7384825676734468
1962	3.750570419432452
1963	3.760250238999102
1964	3.7681357541406735
1965	3.7744093254209856
1966	3.771209798120605
1967	3.759061249822769
1968	3.7466626858359646
1969	3.7328881567152767
1970	3.7174449266272207
1971	3.7024606390950376
1972	3.688216314620946
1973	3.6726288731119534
1974	3.6544096378006268
1975	3.6409031366458118
1976	3.6378819216820064
1977	3.625246684436603
1978	3.5953521501565127
1979	3.564378443631714
1980	3.5364519508138317
1981	3.5020226294963543
1982	3.4670227091649863
1983	3.441725312203739
1984	3.42564124919092
1985	3.419212965414515
1986	3.4236298650450423
1987	3.438746282856182
1988	3.461417338480063
1989	3.4881982168402055
1990	3.511128738719231
1991	3.5382682864643993
1992	3.5761382653743885
1993	3.622893866445943
1994	3.672786461694118
1995	3.720963065701331
1996	3.788552842539785
1997	3.874428228641712
1998	3.944263580303808
1999	3.9956579811230974
2000	4.041693535239235
2001	4.083526429608194
2002	4.127541499312405
2003	4.16633604586777
2004	4.193086457812952
2005	4.214118437772956
2006	4.233095333983171
2007	4.2536796264628665
2008	4.2791649041322275
2009	4.311466469362834
2010	4.352800433168715
2011	4.412686151616088
2012	4.4884799161578846
2013	4.570614144137693
2014	4.659026043392399
2015	4.756951768499297
2016	4.871538847397593
2017	5.0038197401991225
2018	5.145345735342997
2019	5.29219954404175
2020	5.432331608369259
2021	5.554966629384879
2022	5.675422965683095
2023	5.819062880923574