Year	% of total population
1960	2.44580961328925
1961	2.51514535757636
1962	2.58251581167739
1963	2.64744540672342
1964	2.71181541358163
1965	2.76267980083032
1966	2.81593123209722
1967	2.88649387784051
1968	2.95877246539355
1969	3.03032353868879
1970	3.09927474602863
1971	3.16519745070297
1972	3.23051981794317
1973	3.29576660223122
1974	3.36027076530592
1975	3.42319180054841
1976	3.4836216123093
1977	3.54059116124773
1978	3.5921507056051
1979	3.63687210445953
1980	3.67442651190843
1981	3.7050202484618
1982	3.73033342764045
1983	3.75343791579717
1984	3.77694812805872
1985	3.80452322297883
1986	3.83832708863751
1987	3.87757429632136
1988	3.92231643779767
1989	3.97517957801577
1990	4.03950570365458
1991	4.11420584645079
1992	4.19843471744056
1993	4.29118646077432
1994	4.38844244421507
1995	4.48837020734847
1996	4.58930602490695
1997	4.69086936862949
1998	4.79466730263417
1999	4.9016904918141
2000	5.01128656593442
2001	5.12255524339804
2002	5.23541317474817
2003	5.34760871857336
2004	5.45351692891052
2005	5.55179761507416
2006	5.64329538481029
2007	5.72622007818511
2008	5.80009077084034
2009	5.86691168927594
2010	5.92834660184594
2011	5.98542680527852
2012	6.03558542121849
2013	6.0812870096872
2014	6.13010307938018
2015	6.18552594699389
2016	6.25486179727001
2017	6.34506609059864
2018	6.458385226163
2019	6.59381824686952
2020	6.70951911634314
2021	6.77963147468845
2022	6.85716522052911
2023	7.02462865624748
