Year	% of total population
1960	2.65220909456039
1961	2.70058462347678
1962	2.74579590653554
1963	2.78906255842486
1964	2.83318132386273
1965	2.8787672476398
1966	2.92472487654842
1967	2.97157581261409
1968	3.01793032294887
1969	3.0593263456262
1970	3.09447636007107
1971	3.12504104742821
1972	3.1503156725267
1973	3.17107036635012
1974	3.19084713945112
1975	3.21286080352638
1976	3.23663626155654
1977	3.26242536972021
1978	3.29011306203961
1979	3.31691200220923
1980	3.34219403403073
1981	3.36470588933291
1982	3.38297442026886
1983	3.39684598239039
1984	3.40655169917553
1985	3.41270794727448
1986	3.41554564578248
1987	3.41462995779728
1988	3.41063345015652
1989	3.40504178876443
1990	3.39757685958267
1991	3.38926957606044
1992	3.38142766250116
1993	3.3730846460928
1994	3.36351216594264
1995	3.35376520670402
1996	3.34465456786139
1997	3.37086177898909
1998	3.43084988025836
1999	3.48949556797677
2000	3.54721440628203
2001	3.60496490121668
2002	3.66118983585918
2003	3.71253481130333
2004	3.7597122483007
2005	3.7808582651201
2006	3.78086241987639
2007	3.79077649557682
2008	3.81212157412614
2009	3.84366307837031
2010	3.88546954467746
2011	3.93633335211355
2012	3.99498924802385
2013	4.06049077971013
2014	4.13431819153207
2015	4.15106979545539
2016	4.12332104137607
2017	4.12602778798319
2018	4.15415582718409
2019	4.20668705568304
2020	4.27857533111667
2021	4.3571783787533
2022	4.45475282141185
2023	4.57710424791602