Year	% of total population
1960	6.444404508676007
1961	6.564936691021933
1962	6.6909285747956275
1963	6.81587146062361
1964	6.947876716855932
1965	7.085665513843048
1966	7.232573221042003
1967	7.388647333591818
1968	7.55125168236041
1969	7.713746664042789
1970	7.859973567975286
1971	7.972598728705707
1972	8.087206951635153
1973	8.201936724194551
1974	8.310862529036381
1975	8.420050848611917
1976	8.526297689195625
1977	8.645504469358915
1978	8.757106175486065
1979	8.844457892430128
1980	8.95387186364512
1981	9.048495045530698
1982	9.132037666767772
1983	9.252665577656703
1984	9.401198196801657
1985	9.536734979126503
1986	9.681351221847502
1987	9.825722256436737
1988	9.983124675695596
1989	10.146431123366055
1990	10.31433874521175
1991	10.506166891776633
1992	10.72455852625501
1993	10.916461947308962
1994	11.078189770361547
1995	11.24845150085228
1996	11.40089565623993
1997	11.551931735234515
1998	11.69666261846083
1999	11.830087289439652
2000	11.96133400499851
2001	12.097637621427962
2002	12.219692849329856
2003	12.330185331384687
2004	12.441818315327117
2005	12.552685321119595
2006	12.672040515073302
2007	12.697121868607077
2008	12.844100362090602
2009	12.999082483744964
2010	13.160403530417556
2011	13.327880277487935
2012	13.493686859754522
2013	13.657220098378865
2014	13.81416381401262
2015	13.934293188974701
2016	14.065903076080012
2017	14.20787768652518
2018	14.337003485677375
2019	14.455163260814139
2020	14.581054970595163
2021	14.721331803381956
2022	14.876724067782364
2023	15.038653397408734