Year	% of total population
1960	17.068384359527062
1961	17.20137980629422
1962	17.345859159095447
1963	17.506724398740996
1964	17.692326046763284
1965	17.89714588054427
1966	18.126710741264304
1967	18.381981428576452
1968	18.671459227834358
1969	18.985386230542293
1970	19.319371643107683
1971	19.67272391400409
1972	20.044724059304123
1973	20.40446664842365
1974	20.61426416322723
1975	20.823448635082983
1976	21.029192486980655
1977	21.226034875518394
1978	21.417017684289718
1979	21.602182476339337
1980	21.787654656437073
1981	21.9709640056518
1982	22.15204760896667
1983	22.331586421061782
1984	22.511126771011053
1985	22.6378991889843
1986	22.774241190456376
1987	22.925054580206833
1988	23.092920414424842
1989	23.27008013313409
1990	23.451794393926008
1991	23.635910692489446
1992	23.8277403648893
1993	24.027330934770124
1994	24.241850168751604
1995	24.472942654279937
1996	24.723116737057858
1997	24.987825655362155
1998	25.276879987836985
1999	25.59412830680033
2000	25.935711085137108
2001	25.852519304395365
2002	25.807647218773095
2003	25.791181322682228
2004	25.792560195635815
2005	25.805332716078986
2006	25.828884749160153
2007	25.86024969712967
2008	25.896900456494016
2009	25.94137748083715
2010	26.00286613538163
2011	26.076843950096645
2012	26.161103561146167
2013	26.257744125838588
2014	26.37066582333668
2015	26.49697400046821
2016	26.632647180450558
2017	26.777719439261393
2018	26.935462176738547
2019	27.112544478036522
2020	27.319935859210382
2021	27.561987808590565
2022	27.820335316992704
2023	28.049510252249878