Year	% of total population
1960	26.178537986543777
1961	26.529338377796705
1962	26.86683640153398
1963	27.217618361894147
1964	27.589237197553402
1965	27.981557843942554
1966	28.32301066298039
1967	28.680150802236348
1968	29.066389788209364
1969	29.468417847893342
1970	29.86181963072149
1971	30.04132137537598
1972	30.18926808072449
1973	30.354830103368503
1974	30.530568850287203
1975	30.721438426871142
1976	30.870309314665814
1977	31.00209275745638
1978	31.140919663095005
1979	31.286116978991274
1980	31.448656862456378
1981	31.58986145469163
1982	31.742936505496775
1983	31.90732778548153
1984	32.092426589023844
1985	32.28770319614823
1986	32.49848010257367
1987	32.74191314913662
1988	32.96390545672743
1989	33.195659513207254
1990	33.41014145667216
1991	33.52423142245471
1992	33.617489774889115
1993	33.7348124609794
1994	33.875028368999864
1995	34.030259521615
1996	34.16845046973506
1997	34.28842199303372
1998	34.42280187569138
1999	34.567446265789506
2000	34.7036804707066
2001	34.78930861847476
2002	34.907489026605944
2003	35.03287564973351
2004	35.16389336567504
2005	35.30632364357515
2006	35.43366388256316
2007	35.57335498028271
2008	35.70740573232893
2009	35.86796606599355
2010	36.04728681897618
2011	36.26829314212253
2012	36.43669720184238
2013	36.589431765492435
2014	36.740703239336945
2015	36.90048175761496
2016	37.044405568760766
2017	37.204605958988246
2018	37.37356880449015
2019	37.46641165780409
2020	37.552277856068706
2021	37.77514871928651
2022	37.91333175942376
2023	37.99200888688161