Year	% of total population
1960	4.55838719629479
1961	4.55668910391249
1962	4.57198479582811
1963	4.59744541787332
1964	4.6290404339995
1965	4.66396548729347
1966	4.70653222761408
1967	4.76039363533198
1968	4.81816541312423
1969	4.87699059982848
1970	4.94399356316642
1971	5.01921482436861
1972	5.11991385780011
1973	5.25743692243796
1974	5.40925796035258
1975	5.55231499534326
1976	5.67661306135307
1977	5.777204814177
1978	5.85071149950881
1979	5.90175765781877
1980	5.93746314188899
1981	5.97426499855117
1982	6.02934762191298
1983	6.10378440366973
1984	6.19489625748933
1985	6.29632467010132
1986	6.40041928051208
1987	6.5086201379734
1988	6.61708631595137
1989	6.72709648013455
1990	6.84256912368282
1991	6.97099102702215
1992	7.11833445613308
1993	7.29233898570283
1994	7.50056710402167
1995	7.73845888227794
1996	8.0040016651224
1997	8.29655001342209
1998	8.62096860251772
1999	8.97547320621425
2000	9.32903891842968
2001	9.61878959831047
2002	9.81274202960055
2003	9.95157503423987
2004	10.0842276490009
2005	10.2344105444002
2006	10.4183370750481
2007	10.6426197824736
2008	10.9061916790923
2009	11.2110693586396
2010	11.5604579007965
2011	11.9318515677912
2012	12.2816006245864
2013	12.6251986324457
2014	12.9908853120508
2015	13.3760290614016
2016	13.7806424406772
2017	14.2014697608796
2018	13.6911142148742
2019	13.5585803688638
2020	14.2467714626087
2021	14.5785392302115
2022	14.9497681304224
2023	15.3651920844245