Year	% of total population
1960	3.3106922872952222
1961	3.330252064522848
1962	3.363119184532244
1963	3.4021617372848394
1964	3.4396711788652032
1965	3.4701787926077947
1966	3.493477085242162
1967	3.5115162001947673
1968	3.5273922503307324
1969	3.5445855369801875
1970	3.5627631477541986
1971	3.5808828716844965
1972	3.6060532127727045
1973	3.639636712173806
1974	3.6746032224297376
1975	3.710191069222395
1976	3.746187582473734
1977	3.7787404212191014
1978	3.8060406997017826
1979	3.8290607209484815
1980	3.842707025969463
1981	3.846381682583011
1982	3.847480073068723
1983	3.848903038104826
1984	3.8516614400909943
1985	3.8577993709103415
1986	3.8668747980035936
1987	3.8790097380551107
1988	3.8942795686785496
1989	3.9123936179741223
1990	3.9320960446747644
1991	3.959701686948422
1992	3.9933953341438917
1993	4.031898023492776
1994	4.074492864256945
1995	4.118868495215677
1996	4.166324763508595
1997	4.21886622571817
1998	4.273931552004624
1999	4.3308546727394965
2000	4.3884572652414855
2001	4.446093590741964
2002	4.5068874229977345
2003	4.568164957196664
2004	4.62559753951541
2005	4.679306612570772
2006	4.730235102320829
2007	4.778894902572244
2008	4.828338801817108
2009	4.88048724643958
2010	4.9350168684940785
2011	4.998403120841709
2012	5.071790657635785
2013	5.153807135772116
2014	5.256329140537649
2015	5.379902006682475
2016	5.514056887828696
2017	5.65902898450464
2018	5.817499702148235
2019	5.984107668649695
2020	6.134007077526017
2021	6.2413548371305225
2022	6.339618562612293
2023	6.494082271198495