Year	% of total population
1960	22.0467014155716
1961	22.4331620029795
1962	22.6667271709913
1963	22.8413207630664
1964	23.0855249909645
1965	23.3587092400873
1966	23.6234112040799
1967	23.869372776927
1968	24.1006106443544
1969	24.2923634118075
1970	24.3697557787526
1971	24.3234800158778
1972	24.1674673965805
1973	23.9051242266225
1974	23.5967066342566
1975	23.2380189538607
1976	22.7551581034814
1977	22.1789994605066
1978	21.570546155292
1979	20.9615963259795
1980	20.4226358407282
1981	19.9783937137708
1982	19.5521330647925
1983	19.0961568226947
1984	18.6587661344336
1985	18.2996856632739
1986	18.0100204189145
1987	17.7811149058232
1988	17.6430874893794
1989	17.565466686607
1990	17.5231734314364
1991	17.5719650659301
1992	17.6916779011472
1993	17.7879397655554
1994	17.8317758540407
1995	17.8161363195819
1996	17.72898631711
1997	17.5786701623792
1998	17.4085885638443
1999	17.236098186589
2000	17.046335286558
2001	16.8228171822183
2002	16.6177352323161
2003	16.4354237334891
2004	16.233090874535
2005	16.0181715537962
2006	15.7715384577704
2007	15.5069151202415
2008	15.2525530932903
2009	15.0206842663473
2010	14.825031098926
2011	14.6496695734621
2012	14.4937091890024
2013	14.3772910296185
2014	14.304366143695
2015	14.3069690772991
2016	14.3689170698083
2017	14.4179718865459
2018	14.4324211973005
2019	14.4250419724143
2020	14.4032175479921
2021	14.3854932066305
2022	14.3780936028915
2023	14.3668732549943