Year	% of total population
1960	3.19569945320741
1961	3.08320546295764
1962	2.98272152655553
1963	2.90064958413783
1964	2.83248289778769
1965	2.78180770050085
1966	2.78056228967776
1967	2.81536915410312
1968	2.8518160958503
1969	2.8921834112487
1970	2.93695560499572
1971	2.98260916550239
1972	3.03024493211889
1973	3.08299396923302
1974	3.14020768500063
1975	3.2000282887687
1976	3.28851740662622
1977	3.40864720129714
1978	3.52858342264366
1979	3.63968279622599
1980	3.7424545723756
1981	3.83442441856155
1982	3.91856732143272
1983	3.98858004359021
1984	4.02238226365926
1985	4.05419034436708
1986	4.10913322318632
1987	4.17047097187338
1988	4.23745770508175
1989	4.30568010546006
1990	4.37817501337526
1991	4.45963766284778
1992	4.54581291309099
1993	4.63634264372537
1994	4.73014116646888
1995	4.82818566011003
1996	4.9385719814857
1997	5.06348251023559
1998	5.19544084682801
1999	5.32461618826271
2000	5.44827464564331
2001	5.5632429154077
2002	5.66888941480467
2003	5.77163683251326
2004	5.88067720442748
2005	6.01348463174282
2006	6.16539728210594
2007	6.32071422289594
2008	6.47943207641338
2009	6.63923409740336
2010	6.7986943626987
2011	6.93457142980156
2012	7.06285975699956
2013	7.19668606573578
2014	7.33690449899676
2015	7.50103058299655
2016	7.68012182444862
2017	7.87621800316862
2018	8.09452476973285
2019	8.33619691279507
2020	8.57849253761165
2021	8.79763312991837
2022	9.02090438282512
2023	9.3221721910099