Year	% of total population
1960	8.27853263982769
1961	8.44269965535343
1962	8.53072048181941
1963	8.5431654676259
1964	8.53857026598706
1965	8.60536606788097
1966	8.6693630755403
1967	8.6876671856909
1968	8.63351490657764
1969	8.58131223362575
1970	8.62282181000562
1971	8.77572130481363
1972	8.98693408483695
1973	9.18443255012247
1974	9.38675594434545
1975	9.56994244450005
1976	9.72781989595725
1977	9.8636034796111
1978	9.96840442338073
1979	10.0566077294011
1980	10.1743579035289
1981	10.2796766022416
1982	10.4164501264595
1983	10.6775255588286
1984	11.0080589134362
1985	11.3777049294669
1986	11.7712060618817
1987	12.1179966044143
1988	12.4357142857143
1989	12.7313769751693
1990	12.960793644983
1991	13.1820287169986
1992	13.3661161625534
1993	13.5500405634634
1994	13.815222770009
1995	14.0597924228882
1996	14.1880217521779
1997	14.317847878535
1998	14.571836948852
1999	14.8868949829395
2000	15.1668078510535
2001	15.4127811547411
2002	15.6242717576409
2003	15.7467933995265
2004	15.8465663741468
2005	15.9318138944624
2006	15.8684557406969
2007	15.6137484998
2008	15.3461519482869
2009	15.2992520726187
2010	15.64039408867
2011	16.06864028516
2012	16.3404281782988
2013	16.7304310265033
2014	17.2670405522002
2015	17.8016267162779
2016	18.3095347766006
2017	18.7626525980001
2018	19.1757534917912
2019	19.5927857918649
2020	20.0421908678172
2021	20.4303708351827
2022	20.8306533125057
2023	21.2796549245147