Year	% of total population
1960	14.19206242911199
1961	14.537204386315365
1962	14.893397496210714
1963	15.277852316893265
1964	15.703209870984944
1965	16.150634100144416
1966	16.542202768146524
1967	16.808232594963215
1968	17.086222002294555
1969	17.381259694081223
1970	17.691219078024638
1971	18.014848786604865
1972	18.351545318678024
1973	18.698805706698494
1974	19.022041601525764
1975	19.280456073879435
1976	19.368860859753067
1977	19.444509310348906
1978	19.54135517548276
1979	19.59360102768903
1980	19.620437529340105
1981	19.689625839597465
1982	19.750280358395948
1983	19.770832772867184
1984	19.822434534782346
1985	19.902219522589004
1986	19.99444270346533
1987	20.140946344758458
1988	20.37745766097464
1989	20.593797449455117
1990	20.906105547704268
1991	21.228988734672583
1992	21.48462055461968
1993	21.604690555731477
1994	21.641388976589212
1995	21.684771655677583
1996	21.76579914522645
1997	21.81539359891299
1998	21.859531162769297
1999	21.907284736260326
2000	21.958769867785374
2001	22.02283413224937
2002	22.128842128745507
2003	22.213806071631826
2004	22.207850006378948
2005	22.214452578949444
2006	22.207682836299192
2007	22.05493084516303
2008	22.11853746166086
2009	22.198962451842938
2010	22.290296055310158
2011	22.070974248978786
2012	21.969649862004943
2013	21.915548193056576
2014	21.92560923064856
2015	22.17388119855207
2016	22.492919582127524
2017	22.665827473027825
2018	22.83446419080188
2019	22.865674090209787
2020	22.956386785267394
2021	23.074554208023102
2022	23.158914562025775
2023	23.232563938184633