Year	% of total population
1960	11.137830838554393
1961	11.48407690964862
1962	11.836597216147842
1963	12.206123662535708
1964	12.594498380065842
1965	13.005878959198824
1966	13.437394189747408
1967	13.883783460163215
1968	14.3584178883007
1969	14.858668389328258
1970	15.342086489981503
1971	15.798328681360942
1972	16.27780725579765
1973	16.776052356713816
1974	17.299102435191386
1975	17.848494835847898
1976	18.424840668704366
1977	19.02519890685571
1978	19.65594038551578
1979	20.318852357611203
1980	21.018833176969316
1981	21.752420120559147
1982	22.040592327920013
1983	21.942642950553363
1984	21.846534218472026
1985	21.75711980962941
1986	21.675519599653665
1987	21.59757168983612
1988	21.519877873175336
1989	21.4373055256329
1990	21.35545161708424
1991	21.281965464397267
1992	21.21948099858092
1993	21.165263169287947
1994	21.358714354628095
1995	21.640450469029968
1996	21.943311258145897
1997	22.268626697468832
1998	22.621788173712883
1999	22.99405543018299
2000	23.378537187012306
2001	23.77602364275629
2002	24.19263860642419
2003	24.505462646689654
2004	24.779924024068222
2005	25.064867981382616
2006	25.364556091617473
2007	25.67578289605652
2008	25.9884334136866
2009	26.295397593360985
2010	26.60434922929226
2011	26.92074718866222
2012	27.248660686069282
2013	27.585762836083035
2014	27.93530319394405
2015	28.297122229149963
2016	28.67399306508079
2017	29.0635304309735
2018	29.46582012536121
2019	29.820402389954236
2020	30.16259405741848
2021	30.480731341327612
2022	30.792422463587226
2023	31.094138413118817