Year	% of total population
1960	34.892568595340364
1961	35.65117452177466
1962	36.42182371195905
1963	37.203545741499404
1964	38.010929737618525
1965	38.84618054951619
1966	39.63247736876721
1967	40.36140564275216
1968	41.09642841692106
1969	41.843414781220666
1970	42.60059633383501
1971	43.33425367667141
1972	44.075117094643005
1973	44.83072313937527
1974	45.56114583648208
1975	46.26285011695779
1976	46.99573789123153
1977	47.688940630842026
1978	48.281529371608386
1979	48.864808994030355
1980	49.49461269767556
1981	50.11452029041953
1982	50.71754447379153
1983	51.313115311811984
1984	51.89844447704421
1985	52.45983671863194
1986	53.02317652773899
1987	53.50528332760495
1988	53.90923735964716
1989	54.291863491320555
1990	54.671390343775975
1991	55.013775779328405
1992	55.50256366846548
1993	55.94201497934475
1994	56.346599117684654
1995	56.69242753566405
1996	57.03179543082844
1997	57.380623828163245
1998	57.74518934160462
1999	58.11450111365039
2000	58.48384265760418
2001	58.852468213592445
2002	59.19987687700088
2003	59.53929047485611
2004	59.8871122285998
2005	60.293924061391905
2006	60.74225179267459
2007	61.17535257496482
2008	61.609450185736385
2009	62.04045198765633
2010	62.417797317700625
2011	62.67184956775132
2012	62.93132650309724
2013	63.2755312030127
2014	63.65346648349852
2015	64.05737007966509
2016	64.39947161939982
2017	64.71130667621601
2018	65.02122699819763
2019	65.31316924635374
2020	65.56004531184624
2021	65.80670253068442
2022	66.09023358265495
2023	66.3723417866259