Year	% of total population
1960	4.342441472844995
1961	4.509414470318445
1962	4.677205279734392
1963	4.8434081647371325
1964	5.02689484673977
1965	5.223624870038689
1966	5.431869024852424
1967	5.652745267325063
1968	5.884495684208478
1969	6.127310271743051
1970	6.3627834408111905
1971	6.588304924337382
1972	6.821071492817919
1973	7.054787826376014
1974	7.286435859422864
1975	7.5232008219885085
1976	7.755458035301286
1977	7.987533061872931
1978	8.207450178775344
1979	8.38554310023936
1980	8.600653240875692
1981	8.83388257492901
1982	9.041988842262667
1983	9.2508789383999
1984	9.478331290773976
1985	9.704050231411438
1986	9.934473169797004
1987	10.163404796076806
1988	10.393314314935992
1989	10.605261658346008
1990	10.836736538256064
1991	11.076263565896413
1992	11.148744938217021
1993	11.201417160449106
1994	11.26204953620404
1995	11.347088078637617
1996	11.543612881283206
1997	11.647114582824104
1998	11.749619568436303
1999	11.841339666856571
2000	11.97793302700141
2001	12.119433823657777
2002	12.233968765724557
2003	12.343569998685219
2004	12.470807760243133
2005	12.547645957666122
2006	12.628207250720491
2007	12.645344551721003
2008	12.767900831291422
2009	12.901787781003828
2010	12.9328083705398
2011	13.05910174144983
2012	13.18231263676233
2013	13.30885060921319
2014	13.431013597863123
2015	13.556105351397592
2016	13.683032258214014
2017	13.811723770589708
2018	13.939444810829807
2019	14.051288891852105
2020	14.169383427528553
2021	14.30081189601857
2022	14.447856049409948
2023	14.601972683640833