Year	% of total population
1960	8.57660463009009
1961	8.58090484547428
1962	8.59646765214949
1963	8.60653316387868
1964	8.5984155569963
1965	8.58299604051872
1966	8.55994804650574
1967	8.53199775427615
1968	8.49169197826122
1969	8.44583115649185
1970	8.41749579963437
1971	8.41741584575483
1972	8.46643519584527
1973	8.5519186127375
1974	8.64554800919904
1975	8.77327187377098
1976	8.93430023724056
1977	9.09351306050397
1978	9.26332039629799
1979	9.44738093872213
1980	9.61822098068507
1981	9.75624834540937
1982	9.86779791863965
1983	9.97297614599317
1984	10.0975924992599
1985	10.2580430246233
1986	10.4540859498065
1987	10.642462637727
1988	10.8013250471094
1989	10.9375844665595
1990	11.0837850040266
1991	11.2623002184779
1992	11.4425199272682
1993	11.6141949380911
1994	11.7636771191649
1995	11.8892968888128
1996	12.0059963170674
1997	12.1117553506401
1998	12.2085563621798
1999	12.2879119854503
2000	12.3685459899149
2001	12.4689356388545
2002	12.5703255787015
2003	12.6754308683401
2004	12.788458411359
2005	12.9023759265473
2006	13.0113651076878
2007	13.1097405249566
2008	13.2063665854931
2009	13.3493071291801
2010	13.566209368896
2011	13.8371887791556
2012	14.1254366781439
2013	14.4008825109393
2014	14.6647706236066
2015	14.9248665100365
2016	15.1758298886271
2017	15.4184997124988
2018	15.6688236586956
2019	15.93194153764
2020	16.2335929179415
2021	16.5691553313983
2022	16.9020843102012
2023	17.2345504121801