Year	% of total population
1960	38.5153238807462
1961	38.5444445156371
1962	38.5925803449054
1963	38.7460595446585
1964	39.0657084915536
1965	39.3977805073126
1966	39.6773560246352
1967	39.9578918606195
1968	40.2357756905339
1969	40.494928163432
1970	40.7299257726089
1971	40.945190329377
1972	41.145081576635
1973	41.3305360066315
1974	41.5074482904654
1975	41.6723987177658
1976	41.8139921650917
1977	41.9397294302526
1978	42.0549924733476
1979	42.153909416636
1980	42.2410160485135
1981	42.323305279221
1982	42.4021934362762
1983	42.4848282364779
1984	42.5743577518464
1985	42.6663227911208
1986	42.7585087057566
1987	42.8506239637597
1988	42.9374605312416
1989	43.0065204217146
1990	43.0630385066033
1991	43.1249406858277
1992	43.2003833022671
1993	43.2799604440638
1994	43.3639536008797
1995	43.4502256975881
1996	43.5337406830175
1997	43.6105449965976
1998	43.6900094944354
1999	43.7974809981039
2000	43.8819284273114
2001	43.9168692568564
2002	43.9388242961608
2003	43.9419429266851
2004	43.9133024622248
2005	43.8564581986559
2006	43.7844398078135
2007	43.6883157030447
2008	43.5621945372087
2009	43.4087518975118
2010	43.2298517034666
2011	43.0226040243123
2012	42.7852259398586
2013	42.5083079577281
2014	42.1836943442985
2015	41.8143734603931
2016	41.4125237375988
2017	40.9945900168484
2018	40.5736291578942
2019	40.170639898688
2020	39.7851741149668
2021	39.3898279240262
2022	38.9756031977808
2023	38.5400812549795