Year	% of total population
1960	38.1695645506547
1961	39.403635754972
1962	40.2092386480764
1963	40.6370369702131
1964	40.8189849145267
1965	40.7928243357023
1966	40.5722336261967
1967	40.2200639474498
1968	39.7628598185528
1969	39.1996677379976
1970	38.5318166949905
1971	37.7535727615217
1972	36.857104392159
1973	35.8671135080739
1974	34.8118699407601
1975	33.7389609327545
1976	32.7809927870315
1977	32.0334841386352
1978	31.457593557551
1979	30.9375865740971
1980	30.5295358427724
1981	30.3288338418496
1982	30.2799709307682
1983	30.3490328694981
1984	30.4476403168911
1985	30.5078029559545
1986	30.538000244952
1987	30.5406395724248
1988	30.5281291419619
1989	30.3096802651713
1990	30.1691152312522
1991	30.2554489388221
1992	30.3883797579867
1993	30.4792298262007
1994	30.3754453364223
1995	30.0917980638215
1996	29.6710340348556
1997	29.1940222863602
1998	28.5910416441653
1999	27.8157608967728
2000	26.9054182492255
2001	25.9528041176669
2002	25.0474752720378
2003	24.1850950454946
2004	23.3283100844982
2005	22.4304174982919
2006	21.4802048514011
2007	20.5782332737428
2008	19.8898881334361
2009	19.4809797198087
2010	19.2508857740897
2011	19.1147520498632
2012	19.0968978057734
2013	19.1928887743076
2014	19.3860957507787
2015	19.6248898551012
2016	19.8596918524618
2017	20.0694583970184
2018	20.2182434550055
2019	20.3044279739623
2020	20.3433230260031
2021	20.4225514860675
2022	20.4777683189419
2023	20.3910552685855