Year	% of total population
1960	5.17299909590011
1961	5.4207065079556465
1962	5.673829817619396
1963	5.935349202793824
1964	6.399709536424576
1965	6.8981212538032315
1966	7.436575129795453
1967	8.01686086961714
1968	8.642828487164428
1969	9.307804593171383
1970	10.00981178677859
1971	10.74508289841327
1972	11.519445536978026
1973	12.337158101331022
1974	13.212386219841033
1975	14.09436355309418
1976	14.814250653465292
1977	15.625075850537359
1978	16.479643196253488
1979	16.570235386865637
1980	16.66121936797687
1981	16.753520016711473
1982	16.85388850997623
1983	16.96387112760651
1984	17.088065620353785
1985	17.226837413407665
1986	17.3837861222336
1987	17.54755334506557
1988	17.662536550796496
1989	17.663954186983222
1990	17.648645653345692
1991	17.642400694818747
1992	17.647161457493564
1993	17.661631690372687
1994	17.689962205533362
1995	17.72592581662573
1996	17.767858987535302
1997	17.813846125054148
1998	17.88288535398534
1999	17.901939165884716
2000	17.902125458416744
2001	17.922320229291543
2002	17.962697927951062
2003	18.020080202242703
2004	18.092637098182717
2005	18.176826145618275
2006	18.272664662169447
2007	18.377970198358035
2008	18.49019452196501
2009	18.60406363125758
2010	18.7196123947102
2011	18.843626608166225
2012	18.972930089676336
2013	19.100444215628208
2014	19.18088952408411
2015	19.210597768564735
2016	19.240368087021427
2017	19.26911186792539
2018	19.30171144663597
2019	19.346171272407116
2020	19.4047544009557
2021	19.487508101407773
2022	19.586945450126635
2023	19.694327932423036