Year	% of total population
1960	37.2856604947367
1961	37.8267070752863
1962	38.4129162419469
1963	39.0135174342559
1964	39.5760578425005
1965	40.1152109606103
1966	40.9549864845388
1967	42.0377710797313
1968	43.0283637025651
1969	43.9085411439019
1970	44.6599716487333
1971	45.0447985057072
1972	45.0787411268837
1973	45.019584730556
1974	44.8828445710803
1975	44.640389562577
1976	44.099134960457
1977	43.3664735713284
1978	42.7099243533468
1979	42.1514431417311
1980	41.7231419065916
1981	41.1953962631907
1982	40.5445874303733
1983	39.9517749713714
1984	39.598541554345
1985	39.3249513625114
1986	39.3166788061644
1987	39.5931709264981
1988	39.6687321202375
1989	39.5054463480532
1990	38.8414194559498
1991	37.2523329600597
1992	36.222420498657
1993	34.4661140892132
1994	32.9104884145205
1995	32.3593247187763
1996	31.9563733713767
1997	31.3003894193964
1998	30.4926315349803
1999	29.6013107300577
2000	28.6814858534142
2001	27.7822073291111
2002	26.9425221895081
2003	26.1781788869506
2004	25.4761768216615
2005	24.8888734802793
2006	24.4529829580915
2007	24.0884181988847
2008	23.7330062029163
2009	23.3561195471374
2010	23.0246319125801
2011	22.6986271021172
2012	22.3287554611459
2013	21.9584134782826
2014	21.8591585166194
2015	21.7090251264921
2016	21.5923208134217
2017	21.5064009360702
2018	21.1430572070623
2019	20.8345590996104
2020	20.9743066331884
2021	21.1201276012832
2022	20.7151278569309
2023	20.1268065819704