Year	% of total population
1960	9.4159383322925
1961	9.658692097801172
1962	9.824124219264743
1963	9.939406719891485
1964	10.06807346835084
1965	10.207299191123962
1966	10.321900250073243
1967	10.429840805207848
1968	10.541548472331943
1969	10.65387869277845
1970	10.769866229127976
1971	10.890341424856944
1972	11.034875187975874
1973	11.184415090154575
1974	11.341752183741225
1975	11.444066362690062
1976	11.608251125544047
1977	11.784531949988237
1978	11.969077443041806
1979	12.156587931463292
1980	12.349379842951342
1981	12.49930279528424
1982	12.62151916789461
1983	12.767759891530458
1984	12.924182227437683
1985	13.085664372706614
1986	13.251005568546267
1987	13.415069541252384
1988	13.587797935774303
1989	13.768775679970172
1990	13.961542240325585
1991	14.18808778202016
1992	14.402343907266735
1993	14.628023110514262
1994	14.872154797702457
1995	15.135090867414279
1996	15.422643731108789
1997	15.717316570797735
1998	16.0331986016003
1999	16.372738619539874
2000	16.743201002013286
2001	17.00280948501882
2002	17.207551388934945
2003	17.420960093963934
2004	17.638787782458206
2005	17.86100977395884
2006	18.09614623396431
2007	18.334968227572077
2008	18.601781057958284
2009	18.87614717012345
2010	19.144142136960543
2011	19.361118806271552
2012	19.565003658161515
2013	19.776759231611567
2014	19.999973662401104
2015	20.244128367840407
2016	20.49637664950789
2017	20.742398242145526
2018	21.00206357824383
2019	21.24749936331208
2020	21.508350363977197
2021	21.789668144812524
2022	22.101176838875624
2023	22.385634906716454