Year	% of total population
1960	65.10743140465965
1961	64.34882547822534
1962	63.578176288040964
1963	62.79645425850059
1964	61.98907026238149
1965	61.15381945048381
1966	60.36752263123278
1967	59.63859435724784
1968	58.90357158307895
1969	58.15658521877934
1970	57.39940366616499
1971	56.66574632332859
1972	55.92488290535699
1973	55.16927686062473
1974	54.43885416351792
1975	53.73714988304221
1976	53.00426210876847
1977	52.311059369157974
1978	51.71847062839162
1979	51.135191005969645
1980	50.50538730232444
1981	49.88547970958047
1982	49.28245552620847
1983	48.686884688188016
1984	48.10155552295579
1985	47.54016328136806
1986	46.97682347226101
1987	46.49471667239504
1988	46.09076264035284
1989	45.70813650867944
1990	45.328609656224025
1991	44.9862242206716
1992	44.497436331534516
1993	44.057985020655245
1994	43.65340088231535
1995	43.30757246433594
1996	42.968204569171554
1997	42.61937617183675
1998	42.25481065839538
1999	41.88549888634963
2000	41.516157342395815
2001	41.147531786407555
2002	40.800123122999125
2003	40.46070952514389
2004	40.11288777140021
2005	39.706075938608095
2006	39.25774820732542
2007	38.82464742503518
2008	38.390549814263615
2009	37.95954801234366
2010	37.582202682299375
2011	37.32815043224867
2012	37.06867349690276
2013	36.7244687969873
2014	36.34653351650148
2015	35.94262992033491
2016	35.60052838060018
2017	35.28869332378398
2018	34.97877300180236
2019	34.68683075364626
2020	34.43995468815376
2021	34.19329746931558
2022	33.909766417345054
2023	33.62765821337411