Year	% of total population
1960	52.9404434043109
1961	52.6276769059871
1962	52.3397623769998
1963	52.0754445505556
1964	51.8827523153816
1965	51.7907236783854
1966	51.7651489256072
1967	51.7962023050341
1968	51.8921576744375
1969	52.0549918630449
1970	52.2878750084377
1971	52.5816461490468
1972	52.933889448286
1973	53.3546143093107
1974	53.8360272345818
1975	54.3709040115432
1976	54.9572104483658
1977	55.6224982087257
1978	56.3619887540299
1979	57.1324854991917
1980	57.9123731995276
1981	58.6954076003377
1982	59.5013132034141
1983	60.3438982027032
1984	61.1968402548399
1985	62.0332768253774
1986	62.8392338891004
1987	63.6143594124912
1988	64.3572931546668
1989	65.0305130306669
1990	65.7419946160137
1991	66.4283440470698
1992	67.0092864260748
1993	67.5270097061964
1994	67.9408426313113
1995	68.2723895512069
1996	68.5717305328573
1997	68.8821559744733
1998	69.1802816078855
1999	69.4845893915956
2000	69.8434103850766
2001	70.2148709066152
2002	70.5301616658814
2003	70.7846529559061
2004	70.9673585598468
2005	71.107761438629
2006	71.2695936830066
2007	71.4470358043055
2008	71.605939584979
2009	71.7352649345165
2010	71.8651109129663
2011	71.9885681929111
2012	72.0437395056754
2013	71.9936341061176
2014	71.843179700994
2015	71.6337377501083
2016	71.3995603582685
2017	71.1327737822408
2018	70.8181288942403
2019	70.465660239545
2020	70.083656934732
2021	69.6880465654279
2022	69.2679087911167
2023	68.8166933628021