Year	% of total population
1960	14.621829291868394
1961	14.927429920696325
1962	15.242441296222339
1963	15.57743598738962
1964	15.927450310280328
1965	16.289694241534978
1966	16.650668714959593
1967	17.020715128450806
1968	17.39974693568433
1969	17.78929192737788
1970	18.168189914006362
1971	18.579094158249262
1972	19.00913219343821
1973	19.441164862117475
1974	19.862801711435402
1975	20.29181774180208
1976	20.72768927370831
1977	21.156512701762875
1978	21.596167116143423
1979	21.990649427085973
1980	22.37733336434113
1981	22.794521028216078
1982	23.20383951059811
1983	23.65165398155262
1984	24.148750555427206
1985	24.690840749353487
1986	25.25904576801007
1987	25.82818058617883
1988	26.396370929733916
1989	26.95718178880962
1990	27.507940652458068
1991	27.947147201632895
1992	28.37666170011075
1993	28.807118629751812
1994	29.23348997154336
1995	29.62679651076436
1996	29.96328487966011
1997	30.31810795965357
1998	30.682807266447107
1999	31.04519184230966
2000	31.40720882159499
2001	31.83361441399512
2002	32.2704581690531
2003	32.709562105812985
2004	33.1536625335962
2005	33.6137382171673
2006	34.07123875036642
2007	34.486737837707224
2008	34.989868697828115
2009	35.49784660401796
2010	36.01341269092455
2011	36.535352490448595
2012	37.04690943843215
2013	37.56027440187012
2014	38.08749625070886
2015	38.62976604418073
2016	39.15938042350239
2017	39.68570326968401
2018	40.22308664597199
2019	40.75785871162709
2020	41.29302613201913
2021	41.828696279899816
2022	42.36671018852827
2023	42.90870241445097