Year	% of total population
1960	5.54775615095417
1961	5.56093125196731
1962	5.54341392341666
1963	5.52280311457175
1964	5.53200278285068
1965	5.5752644772061
1966	5.63133018230925
1967	5.70387855602133
1968	5.82077051926298
1969	5.98990926157697
1970	6.18529946076877
1971	6.38953919945184
1972	6.57995771990861
1973	6.75106282475201
1974	6.91963655195141
1975	7.09591407540934
1976	7.2902712070823
1977	7.48587041958304
1978	7.68022146571396
1979	7.88304509273896
1980	8.07717798168563
1981	8.23362457565808
1982	8.33946777577386
1983	8.41413311421528
1984	8.49963312891216
1985	8.58463253672834
1986	8.64898651665327
1987	8.70625803876347
1988	8.76365879450123
1989	8.8301728213479
1990	8.8985557682269
1991	8.99022013339324
1992	9.10626259162416
1993	9.22122251636463
1994	9.35350989232214
1995	9.48617265473258
1996	9.64981910244734
1997	9.86932771016322
1998	10.123177704258
1999	10.3818371145347
2000	10.6304280523374
2001	10.9005391577482
2002	11.1829029844141
2003	11.4611598030976
2004	11.7475952534647
2005	12.0055274506222
2006	12.1796751769564
2007	12.3663022222926
2008	12.6356558510849
2009	12.9258841263703
2010	13.3126861790156
2011	13.8400516267137
2012	14.4083196324761
2013	14.9773249771675
2014	15.4912792991871
2015	15.9817243126821
2016	16.5305701782203
2017	17.1529039905176
2018	17.7769737773513
2019	18.3791322880672
2020	19.0221847400848
2021	19.6813897328036
2022	20.408513025053
2023	21.2247732912953