Year	% of total population
1960	3.3001113533737176
1961	3.3202852286565916
1962	3.350284491737445
1963	3.386358957645472
1964	3.423956221919524
1965	3.4636221642713316
1966	3.5060180736194546
1967	3.54978698859103
1968	3.593266638430702
1969	3.634321151244709
1970	3.6724023814088724
1971	3.7183425149652303
1972	3.7742698734824875
1973	3.8318486001457845
1974	3.8912151481831034
1975	3.9535037493456064
1976	4.016824872770872
1977	4.079215824752839
1978	4.13968249330077
1979	4.196381112984289
1980	4.243030901669224
1981	4.278816561741981
1982	4.310841181477534
1983	4.342931636325244
1984	4.3783938192143355
1985	4.420071734164898
1986	4.469881538870103
1987	4.528301717450087
1988	4.5930718524745116
1989	4.66372593032069
1990	4.737013610795461
1991	4.812974389634569
1992	4.894010492632715
1993	4.979881766319873
1994	5.071957177279139
1995	5.166539811288009
1996	5.261579033797894
1997	5.357741737782224
1998	5.454065707950848
1999	5.551190271806284
2000	5.650552770270184
2001	5.754927986731308
2002	5.865087164952842
2003	5.978553173180584
2004	6.095499437838622
2005	6.217808621549908
2006	6.344959068218527
2007	6.473826324135836
2008	6.60575443042974
2009	6.741683460614248
2010	6.873761044477947
2011	7.014667980711676
2012	7.169948078375831
2013	7.337034486224711
2014	7.519352055531398
2015	7.714647087152943
2016	7.91528605374178
2017	8.125884035598858
2018	8.350685479199603
2019	8.581866601935243
2020	8.795019813210926
2021	8.983892202970814
2022	9.19232161719241
2023	9.452278892765868