Year	% of total population
1960	40.2241486385259
1961	39.8636812166546
1962	39.4946247237878
1963	39.2078669644912
1964	38.9332767021413
1965	38.8789048567718
1966	39.0997041827054
1967	39.3020594965675
1968	39.4831370517265
1969	39.6379735485317
1970	39.7620306811475
1971	39.8507499738453
1972	39.898678429446
1973	39.9071631775808
1974	39.8848341948397
1975	39.9937679753918
1976	40.2169767760381
1977	40.3466775390254
1978	40.3148305402034
1979	40.1204635103042
1980	39.8782979147463
1981	39.6890722456124
1982	39.5427804711256
1983	39.4348985223698
1984	39.4105810034064
1985	39.5110605489738
1986	39.7607923940998
1987	40.1958567993195
1988	40.8300239383415
1989	41.5221271956357
1990	42.0713594141189
1991	42.3676528543445
1992	42.5398587478707
1993	42.7395952737715
1994	42.9359155361476
1995	43.0872207957394
1996	43.1705621164749
1997	43.1959314203863
1998	43.1761629956179
1999	43.1247829282674
2000	43.0845798332004
2001	43.0941846649668
2002	43.1399396573474
2003	43.1884336340529
2004	43.1765291015694
2005	43.0396873663681
2006	42.8112002791171
2007	42.5335160620074
2008	42.1823806786942
2009	41.7637535897291
2010	41.392796327745
2011	41.1014253676629
2012	40.7572282254474
2013	40.2655922448786
2014	39.6457719672864
2015	39.0482189195174
2016	38.4890270970355
2017	37.8919914577694
2018	37.2656161154436
2019	36.6113535412701
2020	35.945061327159
2021	35.2940931547335
2022	34.7119875105868
2023	34.214675039468