Year	% of total population
1960	7.34287193768231
1961	7.54941923369704
1962	7.7394807364268
1963	7.93556806340482
1964	8.1869513637694
1965	8.45738572430815
1966	8.73002495697535
1967	8.98361634662756
1968	9.22367783607291
1969	9.46255332630323
1970	9.71651937853535
1971	9.97670148576965
1972	10.2202398049781
1973	10.483242738981
1974	10.7618769277042
1975	11.0389087155347
1976	11.3054865422803
1977	11.5251186215807
1978	11.7380899822427
1979	11.9622066121882
1980	12.1117606094733
1981	12.1972411266737
1982	12.2410772661679
1983	12.2615219697395
1984	12.3561187495036
1985	12.5569293927219
1986	12.8394987033152
1987	13.1394336974121
1988	13.4281387738426
1989	13.7481756343114
1990	14.0769653426994
1991	14.3790852670773
1992	14.6783648296965
1993	14.9767018901565
1994	15.2539648634036
1995	15.5129715976123
1996	15.7497236167028
1997	15.9746064579785
1998	16.2219652948958
1999	16.5133765588895
2000	16.7909767864088
2001	17.0280803257256
2002	17.2300155113413
2003	17.382372835075
2004	17.5138597410543
2005	17.6342858612517
2006	17.7526346774596
2007	17.8795913038617
2008	18.0207971087099
2009	18.1969303324261
2010	18.4373980254265
2011	18.788632835441
2012	19.1915929610071
2013	19.6196021688382
2014	20.0796878356174
2015	20.5076482844657
2016	20.8753839804432
2017	21.2074230881658
2018	21.5694413875906
2019	21.9499890252182
2020	22.2651260546645
2021	22.4211110655266
2022	22.3778828900761
2023	22.3041136459572