Year	% of total population
1960	9.502961619119164
1961	9.51314972933441
1962	9.451994456418051
1963	9.387441259111217
1964	9.335200802428762
1965	9.279311650124445
1966	9.226086562494505
1967	9.208437914580196
1968	9.192601153042123
1969	9.145416612020057
1970	9.136327183428776
1971	9.09652467982199
1972	9.030563976528603
1973	8.980200658588748
1974	8.9551486370337
1975	8.96740599770032
1976	8.985068987240377
1977	8.985020102529926
1978	8.972828396111142
1979	8.949308395950919
1980	8.911671863848948
1981	8.879340447131181
1982	8.85322992503603
1983	8.824566243501938
1984	8.798720399657405
1985	8.795635155379607
1986	8.82251355357811
1987	9.091414790765457
1988	8.98199145356381
1989	9.075171511808893
1990	9.100166632195279
1991	9.104058625016835
1992	9.099014670435938
1993	9.09855706569798
1994	9.07606573748279
1995	9.039832500410668
1996	8.99349593970352
1997	8.933786138075524
1998	8.867537762869285
1999	8.82996290278946
2000	8.830312418061958
2001	8.856997744685255
2002	8.871872374444461
2003	8.88169889767846
2004	8.893958596766263
2005	8.926451551946126
2006	8.998495213152603
2007	9.075252522379374
2008	9.146124866957592
2009	9.218439964090388
2010	9.277796317372148
2011	9.497813285117731
2012	9.529089929238275
2013	9.554694270072126
2014	9.566812582965456
2015	9.540494953328398
2016	9.524489096478293
2017	9.550086270973148
2018	9.583031253477593
2019	9.600163248483067
2020	9.630831067173407
2021	9.661285956292314
2022	9.62080412792742
2023	9.566018156212593