Year	% of total population
1960	10.369939784442618
1961	10.527306084648476
1962	10.681400829318164
1963	10.837264281141316
1964	10.999910040919659
1965	11.173140184919202
1966	11.353846587367427
1967	11.530515297064307
1968	11.712462062344676
1969	11.899439665911205
1970	12.094065353592923
1971	12.293130954365251
1972	12.495955046650684
1973	12.688623036368933
1974	12.884798480697155
1975	12.937726648456144
1976	13.111366838778551
1977	13.282816118288387
1978	13.45477846934833
1979	13.62878225299518
1980	13.808741194326647
1981	13.935416757415432
1982	14.022089444748095
1983	14.120633956962457
1984	14.230014224470905
1985	14.34675002486631
1986	14.471283660376795
1987	14.593534169546375
1988	14.723426394878336
1989	14.861902630768398
1990	15.002185731438605
1991	15.112816211890141
1992	15.215861665939743
1993	15.323525684947814
1994	15.448072135333303
1995	15.575364351193938
1996	15.68452933023859
1997	15.791084646940465
1998	15.905492726375524
1999	16.025556382488986
2000	16.149462538265933
2001	16.25441113491087
2002	16.341264081981194
2003	16.435428898443863
2004	16.534387747270618
2005	16.646623193305068
2006	16.768782180259194
2007	16.898504333649484
2008	17.041075911677307
2009	17.18885893892822
2010	17.314402382721145
2011	17.415284517985
2012	17.535055682808736
2013	17.66607334935036
2014	17.810780374414346
2015	17.98656153633592
2016	18.173309202968525
2017	18.354197680448042
2018	18.544321065650507
2019	18.71121296922566
2020	18.89296483065905
2021	19.094710862035626
2022	19.302504577839386
2023	19.49513201666583