Year	% of total population
1960	2.64345919800705
1961	2.69253059939736
1962	2.74001588385575
1963	2.78709108752017
1964	2.83425638249439
1965	2.88231962867267
1966	2.93189847595678
1967	2.98326852840377
1968	3.03514179603952
1969	3.0868985730218
1970	3.13826589109188
1971	3.18959534797425
1972	3.23973870007715
1973	3.28685674550926
1974	3.33265704475851
1975	3.37767980145459
1976	3.42132467654886
1977	3.45973837419967
1978	3.49173303848206
1979	3.51900243239253
1980	3.53977622710278
1981	3.554345577784
1982	3.56359630403218
1983	3.5666901777994
1984	3.56434697082207
1985	3.55650380060769
1986	3.54230175660379
1987	3.52160786314493
1988	3.49426092404528
1989	3.46102775154806
1990	3.42387643111889
1991	3.38560953774582
1992	3.3447690824296
1993	3.29862323203837
1994	3.24821806126016
1995	3.19623886673404
1996	3.14406253411511
1997	3.09074139380453
1998	3.03688141027329
1999	2.98521600540475
2000	2.9375813354464
2001	2.894288294277
2002	2.85550442283963
2003	2.82142613485451
2004	2.79060792681707
2005	2.7629467501991
2006	2.73922802992671
2007	2.72052237455745
2008	2.70948350480971
2009	2.70582375877247
2010	2.70611897055534
2011	2.70711578810168
2012	2.70302226589086
2013	2.67712684683658
2014	2.63675923442925
2015	2.60490967006419
2016	2.58307723100072
2017	2.56916029119687
2018	2.5638778107269
2019	2.56526947605388
2020	2.56141374198483
2021	2.54720628889147
2022	2.53341946519506
2023	2.53163830181169