Year	% of total population
1960	9.656492130750605
1961	9.955987978963185
1962	10.209796893667862
1963	10.47823826500297
1964	10.75929046563193
1965	11.053694436267294
1966	11.326955123519953
1967	11.621017441860465
1968	11.930527838033262
1969	12.256342692584592
1970	12.59724612736661
1971	12.88213318123485
1972	13.055947823621153
1973	13.235566210689607
1974	13.420272166105498
1975	13.611712969426218
1976	13.775963404491268
1977	13.955607605400939
1978	14.148170481019598
1979	14.351636661211128
1980	14.568622656886715
1981	14.706725185685348
1982	14.697284946236557
1983	14.701941617568293
1984	14.720643610628922
1985	14.751106076759063
1986	14.748420912951168
1987	14.765506747816884
1988	14.798454833597463
1989	14.841129138636063
1990	14.89189296071711
1991	14.960564197652443
1992	15.02881608448603
1993	15.093475295893514
1994	15.193753709772363
1995	15.585093261863017
1996	15.77652270460451
1997	15.998694662187235
1998	16.240372792687914
1999	16.482850182636174
2000	16.722114708396873
2001	16.939312978472653
2002	17.11993908641901
2003	17.243396945508717
2004	17.371428739875093
2005	17.51191308317729
2006	17.670050700465715
2007	17.831794525263497
2008	17.998803301451304
2009	18.16261513245739
2010	18.328241515114442
2011	18.56717747434753
2012	18.748889614599204
2013	18.93126759808446
2014	19.112270874050004
2015	19.29988839221223
2016	19.494987618870322
2017	19.693732589378676
2018	19.897319109031532
2019	20.06724034535908
2020	20.262552097178684
2021	20.510961871002348
2022	21.084893889952493
2023	21.27740205311977