Year	% of total population
1960	21.107953393038944
1961	21.589136164700793
1962	22.102546188029883
1963	22.638603961394
1964	23.204850056515223
1965	23.80222657831495
1966	24.442604338322724
1967	25.127496426239933
1968	25.85958322196977
1969	26.631236739348964
1970	27.44377742525867
1971	28.01931667210172
1972	28.56563378402167
1973	29.130526556479396
1974	29.7248075425659
1975	30.346513077697928
1976	30.99307711202789
1977	31.655983050571066
1978	32.3412333337522
1979	33.05181281489462
1980	33.79131687431013
1981	33.97385163595249
1982	34.05778522242927
1983	34.16034159183376
1984	34.28654866698123
1985	34.43633932183767
1986	34.61704139090614
1987	34.827503443201124
1988	35.067935112521845
1989	35.33483900583886
1990	35.633609195455385
1991	35.968956369113684
1992	36.19030089584536
1993	36.39874053964925
1994	36.62229913203385
1995	36.86082016726896
1996	37.117269474232394
1997	37.38800011085355
1998	37.67736485479134
1999	37.99082764359909
2000	38.33222382513999
2001	38.420685880084505
2002	38.507965724215296
2003	38.626265608956736
2004	38.76469306914281
2005	38.91169024928375
2006	39.07666692994997
2007	39.26144971177792
2008	39.46744617183381
2009	39.68751323306053
2010	39.916220588529185
2011	40.11582100069157
2012	40.32621446149495
2013	40.55006716255862
2014	40.781230086653544
2015	41.01956445303471
2016	41.27544483340288
2017	41.540189259766294
2018	41.80703039615354
2019	41.95876212429222
2020	42.143779847140316
2021	42.37016624885887
2022	42.60769986654529
2023	42.8025529292835