Year	% of total population
1960	17.772011711348437
1961	18.07485526101633
1962	18.38388360670162
1963	18.698496526243947
1964	19.020358002239497
1965	19.346370353523536
1966	19.679001157213317
1967	20.01713978798534
1968	20.361979919571663
1969	20.710381271207183
1970	21.066761337926458
1971	21.429666868375886
1972	21.80107905955271
1973	22.17827413056214
1974	22.56479910805552
1975	22.96282052882185
1976	23.373989747070897
1977	23.78718760935339
1978	24.213033882524154
1979	24.655763067742292
1980	25.120064406264337
1981	25.603642510050335
1982	26.111370198350293
1983	26.642006855514637
1984	27.196195220480856
1985	27.767502971515732
1986	28.360607502350128
1987	28.972965880919933
1988	29.607005922335915
1989	30.261864095681496
1990	30.945856328054166
1991	31.65995181984104
1992	32.39063136671049
1993	32.90193676470335
1994	33.44339709700974
1995	34.016640500232675
1996	34.61683510095355
1997	35.23846471553903
1998	35.88428667414511
1999	36.545597775674324
2000	37.23075845233418
2001	37.94200924665256
2002	38.148343765796014
2003	38.242380962790776
2004	38.342014168624885
2005	38.44376493752845
2006	38.543004190758914
2007	38.642881915554405
2008	38.75363553584284
2009	38.87061765139832
2010	38.99721908939116
2011	39.13308707777789
2012	39.28123956628086
2013	39.43926609849498
2014	39.60995831542164
2015	39.79502411388191
2016	39.992950377851756
2017	40.20443122327573
2018	40.43188946579644
2019	40.6112598669561
2020	40.83718032647345
2021	41.12007544700629
2022	41.401607151768104
2023	41.61886790655678