Year	% of total population
1960	2.52692750115777
1961	2.48341465311325
1962	2.4623234103831
1963	2.45980082139287
1964	2.47076948967816
1965	2.49124590868158
1966	2.52306774351653
1967	2.56656525927421
1968	2.61255759625249
1969	2.64974037284884
1970	2.67399611206073
1971	2.68630541906861
1972	2.68800064109935
1973	2.68596686331567
1974	2.68286855885722
1975	2.62611518247835
1976	2.51939430870638
1977	2.41770041538331
1978	2.31920862999884
1979	2.22480848602708
1980	2.16707877625252
1981	2.1852890371282
1982	2.24579919158861
1983	2.29879591553293
1984	2.33767220308234
1985	2.3582008154122
1986	2.35621004234062
1987	2.33199860970213
1988	2.28784125973792
1989	2.23174666045723
1990	2.17852120943509
1991	2.18997988107248
1992	2.26494663170453
1993	2.35053846332809
1994	2.44804175863524
1995	2.55558451244499
1996	2.6704953510837
1997	2.7890853166157
1998	2.90474912892597
1999	3.00704206662674
2000	3.0985035170679
2001	3.18667056363879
2002	3.27294853944726
2003	3.36827191340656
2004	3.48302331370836
2005	3.62080998562385
2006	3.78477212890667
2007	3.97582016987096
2008	4.20333503822586
2009	4.48519060757926
2010	4.77920488678546
2011	4.99467194261152
2012	5.1431185781886
2013	5.28029236669809
2014	5.41178903302584
2015	5.48339584993693
2016	5.49331107775678
2017	5.489348353288
2018	5.46730958742572
2019	5.4291990042466
2020	5.37205912330432
2021	5.2853569649538
2022	5.20645703856569
2023	5.15369735027885