Year	% of total population
1960	14.624216817724152
1961	14.929962953935906
1962	15.245118184167042
1963	15.58025367414744
1964	15.930408165577273
1965	16.29279245334349
1966	16.653910912247515
1967	17.024101217400958
1968	17.403275964362074
1969	17.792961479603182
1970	18.172001508680335
1971	18.583036815669004
1972	19.013252236895035
1973	19.445423004574536
1974	19.86720788123566
1975	20.29638992325088
1976	20.73241248832203
1977	21.161390713797257
1978	21.600878912609772
1979	21.995194430311642
1980	22.38172471909617
1981	22.798769778721812
1982	23.207921164414152
1983	23.655545853447506
1984	24.15248262536174
1985	24.694417481597743
1986	25.262460615183038
1987	25.831558160144926
1988	26.399585348314318
1989	26.960250196667943
1990	27.51086850483319
1991	27.949982171595185
1992	28.37938694606695
1993	28.809782893738312
1994	29.23611276701298
1995	29.62935289181237
1996	29.96578436343929
1997	30.32054591516118
1998	30.68520509528868
1999	31.047552039910695
2000	31.40950851281989
2001	31.83583102398559
2002	32.27265928000124
2003	32.711659399915355
2004	33.15567697793983
2005	33.6156888656079
2006	34.073159993088524
2007	34.48860623725487
2008	34.99170977405093
2009	35.49962861387362
2010	36.01518019856796
2011	36.53701418725001
2012	37.048531690270615
2013	37.56187323420576
2014	38.08906758735444
2015	38.631319192144694
2016	39.16090376452768
2017	39.6871965003954
2018	40.22454532634239
2019	40.75928286371361
2020	41.294416123698475
2021	41.830052868298715
2022	42.368296693701566
2023	42.91023695603695