Year	% of total population
1960	28.087297387923996
1961	28.290149629901293
1962	28.302843655990667
1963	28.246002471156196
1964	28.125249471777742
1965	27.95817988413011
1966	27.789725381691298
1967	27.622598006170502
1968	27.43633702368586
1969	27.21255349223593
1970	26.946532323458097
1971	26.675584978127013
1972	26.407336390273052
1973	26.123108289925916
1974	25.829502771516857
1975	25.526490007480003
1976	25.220460873815135
1977	24.91981610484231
1978	24.613776620607446
1979	24.333611988539126
1980	24.10976813661085
1981	23.922032585908735
1982	23.753975035073122
1983	23.598209996329842
1984	23.460507261445827
1985	23.33929147169382
1986	23.21566603390705
1987	23.09043876004636
1988	22.972437493299832
1989	22.836336912892254
1990	22.67771651877686
1991	22.48991656636427
1992	22.290221639618192
1993	22.08842662112272
1994	21.85516933947903
1995	21.58792063346851
1996	21.29870926953334
1997	20.984674004667344
1998	20.632099082407365
1999	20.25676456181501
2000	19.877514955515515
2001	19.479890188949696
2002	19.07126834658398
2003	18.701336267867216
2004	18.384284841702968
2005	18.101070673999207
2006	17.864548907481584
2007	17.69139179617396
2008	17.60148156312985
2009	17.568415109184564
2010	17.556445712796663
2011	17.566093948609687
2012	17.593200333773886
2013	17.637974583176927
2014	17.69553250042366
2015	17.7649507710369
2016	17.839325125882503
2017	17.9100632965256
2018	17.9562769744738
2019	17.970788180414885
2020	17.95858837858523
2021	17.936248282720396
2022	17.887603572423387
2023	17.75369384898442