Year	% of total population
1960	33.4448066467721
1961	33.411976903933
1962	33.0053583156496
1963	32.4392207301424
1964	31.819704054975
1965	31.1202417774922
1966	30.2990966592045
1967	29.4407213381304
1968	28.57572273617
1969	27.7311777154944
1970	26.8399017909184
1971	26.0127823141654
1972	25.3308944572002
1973	24.7386366011899
1974	24.3019135086388
1975	24.03521947251
1976	23.9444928332133
1977	23.9543986145426
1978	23.975605191849
1979	24.0645449857179
1980	24.2529826150857
1981	24.4669169026346
1982	24.710065124297
1983	24.9972284292042
1984	25.2715874972013
1985	25.4849696104615
1986	25.6020603792298
1987	25.5946467998132
1988	25.4537664104981
1989	25.224509662389
1990	24.9316993716506
1991	24.591139426214
1992	24.2168240627457
1993	23.7930177032347
1994	23.3144520825145
1995	22.7667260103988
1996	22.1799940252191
1997	21.5466626655689
1998	20.8254246441254
1999	20.0759322993357
2000	19.3285235146054
2001	18.6375248164505
2002	18.0256749751824
2003	17.4523078849464
2004	16.9230759464921
2005	16.4433822444271
2006	16.0159344472921
2007	15.6784015190746
2008	15.4564381312847
2009	15.3190517891263
2010	15.2288552015471
2011	15.1453138767257
2012	15.0710455777783
2013	15.0189487870218
2014	14.987170464575
2015	14.974587287896
2016	14.9936562652774
2017	15.0833022515979
2018	15.2032776849962
2019	15.2925703157779
2020	15.3480034078472
2021	15.3692941127502
2022	15.1505142283709
2023	14.9435173137177