Year	% of total population
1960	38.736935834444004
1961	39.35909670238065
1962	39.97185378535864
1963	40.58275345235069
1964	41.196055450539674
1965	41.84120823009924
1966	42.52105392001447
1967	43.21774715925162
1968	43.914338303153855
1969	44.60864528185183
1970	45.29311136180245
1971	45.92829068238021
1972	46.52408273345198
1973	47.11456857354025
1974	47.69909100720467
1975	48.24167474745323
1976	48.73963212079569
1977	49.211134205956995
1978	49.67978032667157
1979	50.11456552861676
1980	50.50951100423113
1981	51.141038668719005
1982	51.847542627722035
1983	52.55525567496155
1984	53.26803760113656
1985	53.948854625979756
1986	54.54420371707263
1987	55.09806867087096
1988	55.65005277905533
1989	56.105903596270544
1990	56.46563634960446
1991	56.69050137879292
1992	56.873893948842706
1993	57.06870817273545
1994	57.24604271302845
1995	57.41381937345534
1996	57.566790269994044
1997	57.725852708637454
1998	57.90268978618426
1999	58.10408823187224
2000	58.325891092764486
2001	58.58069871585161
2002	58.87663671649562
2003	59.19350380733772
2004	59.518660816001685
2005	59.85133344690379
2006	60.183097022995874
2007	60.50191334901056
2008	60.82747514489425
2009	61.15326087668102
2010	61.45877470864642
2011	61.72854715731648
2012	61.96685433569372
2013	62.19755677985064
2014	62.422734339754236
2015	62.650192375304485
2016	62.87812343695073
2017	63.10567293368646
2018	63.34129862506346
2019	63.58325158698678
2020	63.812094315186336
2021	64.03056592259263
2022	64.1351872333154
2023	64.34551775285325