Year	% of total population
1960	40.5643898393559
1961	40.3161132775944
1962	40.0574078635921
1963	39.8952419797892
1964	39.8387109810705
1965	39.896474648053
1966	40.0635419201752
1967	40.2295652302102
1968	40.3897508764664
1969	40.5411057513658
1970	40.6901097209885
1971	40.838922860478
1972	40.9881912771814
1973	41.1366603042151
1974	41.2790365051307
1975	41.4150245763542
1976	41.5438359437437
1977	41.6629692311371
1978	41.7680509416625
1979	41.8632877642462
1980	41.9527642486891
1981	42.0343597555997
1982	42.1063045990398
1983	42.1584622165501
1984	42.1863601076218
1985	42.1924016775088
1986	42.1779603546425
1987	42.1420317260216
1988	42.0835062059293
1989	42.0013266961774
1990	41.9186773201156
1991	41.8207359391238
1992	41.6606831469894
1993	41.4311167771937
1994	41.1536864076338
1995	40.8147500834066
1996	40.4128232129103
1997	39.9383760160186
1998	39.3860637090152
1999	38.7752850312615
2000	38.0888681504137
2001	37.2863598537218
2002	36.3758545379357
2003	35.368098111174
2004	34.2703975901205
2005	33.257854770602
2006	32.4553162636398
2007	31.7256773816833
2008	30.9937700891789
2009	30.29372453605
2010	29.6389241073738
2011	29.0361200032804
2012	28.5000045067188
2013	28.021638426179
2014	27.5487976620036
2015	27.0265743184882
2016	26.4602143481627
2017	25.8207179666231
2018	25.0857338932799
2019	24.3031875318421
2020	23.5262897634452
2021	22.8027110438574
2022	22.1431264417762
2023	21.5352075024336