Year	% of total population
1960	5.4771106324485
1961	5.46467478474502
1962	5.49600852576525
1963	5.57611657450066
1964	5.70778441888224
1965	5.88434091104869
1966	6.09134611094215
1967	6.30818789996214
1968	6.51756717062158
1969	6.71340984181972
1970	6.89363645672219
1971	7.05200572489222
1972	7.19026081800139
1973	7.32830454613673
1974	7.48042303748101
1975	7.65046430562661
1976	7.83720145446969
1977	8.02486050733731
1978	8.18735432120736
1979	8.29496021820096
1980	8.32883282479212
1981	8.30113684950984
1982	8.25201256996829
1983	8.21454283486641
1984	8.21970625721913
1985	8.28392852783097
1986	8.42635531390019
1987	8.62699122076937
1988	8.8290402462659
1989	9.02674102821612
1990	9.20800718986
1991	9.3588573852506
1992	9.53180959228922
1993	9.73623230268049
1994	9.89599013498583
1995	10.0076066440399
1996	10.0717011327944
1997	10.1123415220506
1998	10.1777888951826
1999	10.2682485514718
2000	10.3792408127533
2001	10.4850945161065
2002	10.5525380445082
2003	10.5495822893213
2004	10.5611310909538
2005	10.6248666085867
2006	10.7081406166461
2007	10.7901970753007
2008	10.7946470773697
2009	10.6919536443932
2010	10.5406985943615
2011	10.4296190968524
2012	10.3864047305101
2013	10.5236145264911
2014	10.8985118785958
2015	11.3583439006916
2016	11.8088054316068
2017	12.2298150042792
2018	12.6133373564574
2019	13.0034143851839
2020	13.3553138940116
2021	13.6061118929521
2022	12.9836394544937
2023	12.6559148015487