Year	% of total population
1960	41.3027803081818
1961	41.7079101990263
1962	42.1709204204871
1963	42.7005187718929
1964	43.2492345667292
1965	43.6808668526113
1966	43.9984683341767
1967	44.2826478959886
1968	44.4985574299424
1969	44.6280116270201
1970	44.694770590529
1971	44.7204756972048
1972	44.7230825980292
1973	44.7167157070921
1974	44.7113464854252
1975	44.7140724763959
1976	44.7367555430137
1977	44.7873903243983
1978	44.8686994318671
1979	44.9846443042471
1980	45.1441850832095
1981	45.3554960197997
1982	45.6086741669512
1983	45.8641676318838
1984	46.0912940687433
1985	46.2820444562758
1986	46.4275723447683
1987	46.524266952222
1988	46.5762572306923
1989	46.5874532870653
1990	46.5685808326703
1991	46.5376901805882
1992	46.5392685702428
1993	46.5604617131214
1994	46.5263998259689
1995	46.421111273037
1996	46.2564802872822
1997	46.0387737038966
1998	45.7746642659591
1999	45.6879988070895
2000	45.8399742900658
2001	46.0505056221827
2002	46.2575597400576
2003	46.1241295844807
2004	45.5540575768708
2005	44.8905232645444
2006	44.264480304966
2007	43.6609204578704
2008	43.0804828510357
2009	42.5287123750765
2010	42.0095911125203
2011	41.523914274692
2012	41.0652944807009
2013	40.6299038093774
2014	40.2221065417317
2015	39.8452237729821
2016	39.5000482423697
2017	39.1761984287035
2018	38.9097316998867
2019	38.6878528823519
2020	38.4706127522123
2021	38.2633572107974
2022	38.0351433213408
2023	37.761699380923