Year	% of total population
1960	18.310916317876107
1961	19.444548799705785
1962	20.669654601722925
1963	21.453905982778878
1964	21.683905229720192
1965	21.891202674962436
1966	22.0863721599731
1967	22.285317022159127
1968	22.508098952703417
1969	22.75370140115557
1970	23.001746684391133
1971	23.23327416192881
1972	23.446604611261627
1973	23.63516172255901
1974	23.805616957585247
1975	23.968442966942654
1976	24.140204200684853
1977	24.329736549580417
1978	24.541979914200912
1979	24.734893643722156
1980	24.8943325990411
1981	25.050927972925805
1982	25.207809868352005
1983	25.360655459358856
1984	25.504367264854793
1985	25.63258434457928
1986	25.751556414702787
1987	25.869675122755257
1988	25.997807858244716
1989	26.18664906345408
1990	26.449674822212856
1991	26.748654706176193
1992	27.087351899893314
1993	27.466853660137314
1994	27.890689156249593
1995	28.355119909849837
1996	28.858823783969083
1997	29.39707469777741
1998	29.966762960117215
1999	30.55082009876104
2000	31.21699533125335
2001	32.19512569961753
2002	33.20301272700378
2003	34.24759602202146
2004	35.33435857064109
2005	36.45693766349973
2006	37.60995675725097
2007	38.766246949409414
2008	39.90550847473715
2009	41.00789998773771
2010	42.10292615780827
2011	43.04678166926512
2012	43.85637325420282
2013	44.62115042670816
2014	45.341000811968215
2015	46.02453698441251
2016	46.69662706239035
2017	47.36998672493484
2018	48.05263352519018
2019	48.0336465136136
2020	48.093408836684794
2021	48.24370284564527
2022	48.39219789746013
2023	48.52192690962436