Year	% of total population
1960	10.118036840063988
1961	10.210434644211338
1962	10.263360795183196
1963	10.313776927466153
1964	10.380225052285974
1965	10.470093335892642
1966	10.55653414232103
1967	10.625948815218562
1968	10.705918487727898
1969	10.840945242912463
1970	11.013117449618534
1971	11.22803723403794
1972	11.493198742924315
1973	11.76687674303125
1974	12.052917190945074
1975	12.355755352928192
1976	12.684757105033281
1977	13.02430394213681
1978	13.37248302377177
1979	13.734303805704043
1980	14.09865185629983
1981	14.301023924346099
1982	14.408797470360579
1983	14.51220986423004
1984	14.62564138700394
1985	14.756723809648145
1986	15.103268421444307
1987	15.673270922075544
1988	16.26453230084175
1989	16.86437214301671
1990	17.472897950457952
1991	17.845061770255338
1992	17.97971912688477
1993	18.12889782524124
1994	18.289290421833634
1995	18.460234269615626
1996	18.668365149642714
1997	18.90949806754497
1998	19.16026745329095
1999	19.42083146677343
2000	19.69020184463185
2001	19.885069568127108
2002	20.00510325927903
2003	20.12666760534309
2004	20.238699109363655
2005	20.34032545344195
2006	20.44311075699148
2007	20.54688090880213
2008	20.666676829652733
2009	20.79589486241567
2010	20.99435203954542
2011	21.270436978682593
2012	21.548046711000115
2013	21.803440061835214
2014	22.044280045525856
2015	22.306544118465613
2016	22.581866732371264
2017	22.872658905409267
2018	23.190829522121646
2019	23.403191028117547
2020	23.597809077531362
2021	23.763814476656542
2022	23.897348250735316
2023	23.956353066402304