Year	% of total population
1960	11.533374532023466
1961	11.816650685114126
1962	12.118035153368252
1963	12.43521415872941
1964	12.766176048010722
1965	13.108141748674266
1966	13.450494855542514
1967	13.82201576971389
1968	14.205603534875697
1969	14.603815741502357
1970	14.997002104740414
1971	15.4168214633507
1972	15.850364055018364
1973	16.267867413237497
1974	16.685004600840898
1975	16.67833758383539
1976	17.14409226476502
1977	17.619783379403053
1978	18.111750436026465
1979	18.574496122782165
1980	19.102645544101033
1981	19.563537109727456
1982	19.87244078575051
1983	20.21452866060384
1984	20.600157453825457
1985	21.01482458153529
1986	21.435132863145792
1987	21.857073916648133
1988	22.280653030743714
1989	22.683905966762953
1990	23.07425115485585
1991	23.423835627917203
1992	23.75215487135378
1993	24.081475593103775
1994	24.417028930955933
1995	24.740023054697904
1996	25.02212956671262
1997	25.322943629141804
1998	25.63514899443893
1999	25.94628104447188
2000	26.267249532224913
2001	26.636521380462657
2002	27.024022637118797
2003	27.417416045106222
2004	27.815417810621447
2005	28.229785758654263
2006	28.658892939653153
2007	29.061733611677614
2008	29.528385225356324
2009	29.985848651202048
2010	30.453626907674487
2011	30.89031466026993
2012	31.30804432409773
2013	31.715250040459743
2014	32.13327831310675
2015	32.609706950411095
2016	33.10745599297851
2017	33.61586034673586
2018	34.13037343652151
2019	34.65316416309459
2020	35.17720385910292
2021	35.70218558444125
2022	36.24336905666224
2023	36.80023302434285