Year	% of total population
1960	14.624216817724152
1961	14.92996295393591
1962	15.24511818416704
1963	15.580253674147436
1964	15.930408165577273
1965	16.292792453343488
1966	16.653910912247515
1967	17.024101217400958
1968	17.40327596436207
1969	17.792961479603182
1970	18.172001508680335
1971	18.583036815669004
1972	19.013252236895035
1973	19.445423004574533
1974	19.867207881235665
1975	20.296389923250878
1976	20.732412488322026
1977	21.16139071379726
1978	21.600878912609765
1979	21.995194430311642
1980	22.38172471909617
1981	22.79876977872181
1982	23.207921164414156
1983	23.655545853447503
1984	24.15248262536174
1985	24.694417481597746
1986	25.262460615183038
1987	25.831558160144926
1988	26.39958534831433
1989	26.960250196667946
1990	27.510868504833194
1991	27.94998217159518
1992	28.379386946066944
1993	28.80978289373831
1994	29.236112767012983
1995	29.62935289181237
1996	29.96578436343929
1997	30.320545915161176
1998	30.685205095288687
1999	31.047552039910684
2000	31.40950851281989
2001	31.8358310239856
2002	32.27265928000124
2003	32.71165939991535
2004	33.15567697793982
2005	33.6156888656079
2006	34.07315999308853
2007	34.48860623725487
2008	34.99170977405093
2009	35.499628613873625
2010	36.01518019856796
2011	36.537014187250016
2012	37.048531690270615
2013	37.56187323420577
2014	38.089067587354435
2015	38.6313191921447
2016	39.160903764527674
2017	39.687196500395395
2018	40.22454532634238
2019	40.75928286371362
2020	41.29441612369847
2021	41.8300528682987
2022	42.36829669370158
2023	42.91023695603694