Year	% of total population
1960	10.00381455820297
1961	10.208444222130437
1962	10.446494770250618
1963	10.699972786660238
1964	10.970562756466382
1965	11.26370468633966
1966	11.539223745248957
1967	11.811233368551042
1968	12.102638134632514
1969	12.417206117320003
1970	12.740451483372347
1971	12.990354294166936
1972	13.210955876606299
1973	13.442159774801196
1974	13.685260941409151
1975	13.941598914731161
1976	14.18457271147578
1977	14.41949619453679
1978	14.662941361551328
1979	14.871449093338866
1980	15.033495943505446
1981	15.21413962384603
1982	15.40176654860724
1983	15.582587105660439
1984	15.768473485914654
1985	15.96451602944397
1986	16.14122948654545
1987	16.31235805149348
1988	16.493125339176995
1989	16.677357573624917
1990	16.808770890924865
1991	16.892576241346635
1992	16.962190226663942
1993	17.0585521370914
1994	17.22164547700527
1995	17.44235933507769
1996	17.65132547906044
1997	17.86972384752312
1998	18.085271532183032
1999	18.308298211879993
2000	18.54277668922709
2001	18.828206221137826
2002	19.15155300268451
2003	19.483861585788617
2004	19.806546549725535
2005	20.12886215575569
2006	20.462436434685305
2007	20.83125901261766
2008	21.15028473930537
2009	21.479902221293457
2010	21.79696192739322
2011	22.120838071238815
2012	22.39040558626153
2013	22.553018413149246
2014	22.718272427675185
2015	22.856506833203724
2016	22.985871300032258
2017	23.130429810415382
2018	23.277256052121874
2019	23.391246487247848
2020	23.553094663515513
2021	23.711765714530504
2022	24.479815225603208
2023	24.737445434554484