Year	% of total population
1960	10.050457719441717
1961	10.056007275278077
1962	10.09457615654628
1963	10.173619093095189
1964	10.303394511323443
1965	10.486227886003723
1966	10.684433699076141
1967	10.86530975327052
1968	11.047455433792694
1969	11.246797178861112
1970	11.496426801568774
1971	11.564636360871079
1972	11.455678653547476
1973	11.350572594150917
1974	11.268874957521243
1975	11.253106348499172
1976	11.296811552995445
1977	11.314381674508619
1978	11.292591317880497
1979	11.249236420194888
1980	11.184053949357281
1981	11.354148535254705
1982	11.712608481298588
1983	12.10119130244986
1984	12.512013213564705
1985	12.924834997716511
1986	13.341396935236782
1987	13.756568648391637
1988	14.170245758400918
1989	14.584125681218588
1990	14.978127528192534
1991	15.117107731819132
1992	15.107825563853785
1993	15.127095895011216
1994	15.163827364113475
1995	15.22024768321614
1996	15.311750107821856
1997	15.434327948487397
1998	15.549350836940812
1999	15.637099766783022
2000	15.712203779100115
2001	15.779640916676879
2002	15.830735784727363
2003	15.884314500025276
2004	15.947006783158821
2005	16.016963567189695
2006	16.08955931465991
2007	16.119522449460128
2008	16.089033595177618
2009	16.061520454152472
2010	16.0676628955046
2011	16.062500900485542
2012	16.065628751081206
2013	16.0541408415464
2014	16.031631103006124
2015	16.022247668428317
2016	16.020528491743676
2017	16.044281481902164
2018	16.09967150670358
2019	16.128826114132718
2020	16.153380688287225
2021	16.1705389344832
2022	16.176616042371258
2023	16.175841132710467