Year	% of total population
1960	33.2889163850949
1961	33.1172691980368
1962	32.7505349906661
1963	32.3081201334816
1964	31.8832072354118
1965	31.4961549900157
1966	31.1515088557627
1967	30.8188514915958
1968	30.4359097072665
1969	29.993546620776
1970	29.4597114488115
1971	28.8433354270161
1972	28.1646079611706
1973	27.4199338686821
1974	26.6503460289064
1975	25.8834685293676
1976	25.1421612253501
1977	24.433881049519
1978	23.7458381654259
1979	23.0720305294959
1980	22.4691726796666
1981	21.9795202849352
1982	21.5558172917663
1983	21.1649776316991
1984	20.7947967715344
1985	20.4384024743306
1986	20.09822305563
1987	19.810174302568
1988	19.6025731406415
1989	19.4682285374096
1990	19.4101270227945
1991	19.4292773957217
1992	19.4993355908955
1993	19.5745622621915
1994	19.6171641727921
1995	19.6155754176792
1996	19.5661800954203
1997	19.4588805685158
1998	19.2934401478462
1999	19.1041545386716
2000	18.9103974189764
2001	18.6867542055923
2002	18.4254781580154
2003	18.155040621123
2004	17.8680437675823
2005	17.5472732037771
2006	17.2097557882388
2007	16.8876819912755
2008	16.6288582381536
2009	16.4142470423891
2010	16.2277176225826
2011	16.0601577133143
2012	15.8691325587432
2013	15.6457657544169
2014	15.3894720227291
2015	15.1051564677562
2016	14.9100970381176
2017	14.8747530620308
2018	14.9038083402809
2019	14.9267765214734
2020	14.9296038606602
2021	14.8983407338163
2022	14.7061572977689
2023	14.3548361922303