Year	% of total population
1960	3.3902813196947563
1961	3.4047566337449293
1962	3.4322960579752113
1963	3.465765883915796
1964	3.497637921156089
1965	3.522942375083068
1966	3.54187841902019
1967	3.554838918442259
1968	3.5643884781899393
1969	3.575118248615048
1970	3.587222870005978
1971	3.5966303025243516
1972	3.610612955325749
1973	3.6340942550223243
1974	3.6605836248396573
1975	3.688595289515037
1976	3.7191839467184904
1977	3.748850295642181
1978	3.7740864170439483
1979	3.7951848736652645
1980	3.8075115651380207
1981	3.8115124004325867
1982	3.813293538601141
1983	3.8142858162668882
1984	3.815907102408726
1985	3.819318809020666
1986	3.8243274337500073
1987	3.831242927311146
1988	3.840141184484165
1989	3.850867563201981
1990	3.862201937328135
1991	3.880109023241185
1992	3.902193525380743
1993	3.9268794671659215
1994	3.9534313756784307
1995	3.9827980409912493
1996	4.016094313170701
1997	4.0527531186469234
1998	4.092498803193453
1999	4.134818559585538
2000	4.175572615519698
2001	4.214083499997078
2002	4.254427841994111
2003	4.295233431909048
2004	4.332199046660871
2005	4.365474196291667
2006	4.397602978179772
2007	4.429297332883076
2008	4.46195802065695
2009	4.497431580653429
2010	4.537405704231657
2011	4.584263285251222
2012	4.640536155242431
2013	4.705863310914087
2014	4.7944464915830265
2015	4.909074988875059
2016	5.033814340345142
2017	5.1688557470206336
2018	5.3138817461303
2019	5.465290073214168
2020	5.605097766216657
2021	5.7025456107159185
2022	5.786814662465215
2023	5.9216164981611