Year	% of total population
1960	3.60872369781996
1961	3.69424656117147
1962	3.8143327884399
1963	3.95908984473831
1964	4.11160793378827
1965	4.26419166362246
1966	4.41460061087891
1967	4.55871894113508
1968	4.7000362872868
1969	4.84765975595007
1970	5.00609215787665
1971	5.17784321377099
1972	5.36313765490871
1973	5.55564431703368
1974	5.74592970284427
1975	5.9247679688918
1976	6.0867272457235
1977	6.22941619530061
1978	6.34355967209171
1979	6.41606756049858
1980	6.44725250129768
1981	6.43676730911306
1982	6.38841061082407
1983	6.32666990761669
1984	6.28308711323289
1985	6.27210446545421
1986	6.31026285105228
1987	6.41322658378938
1988	6.57559769682684
1989	6.79102688224292
1990	7.06545531288949
1991	7.39164745092935
1992	7.94969606940757
1993	8.67667238019564
1994	9.36507430236051
1995	9.86458703003605
1996	10.0255633004205
1997	10.2093682709497
1998	10.5215137863151
1999	10.9201293325763
2000	11.3454125641547
2001	11.7765198577712
2002	12.2066568057908
2003	12.6555629306387
2004	13.1577219601918
2005	13.5993920323806
2006	13.9282427637367
2007	14.1234551821782
2008	14.1786327834809
2009	14.1952034040358
2010	14.2025190706696
2011	14.2405116130395
2012	14.3662974972063
2013	14.6111113337905
2014	14.924920909504
2015	15.274900945543
2016	15.6739354883932
2017	16.1353675421734
2018	16.6685293410926
2019	17.2308899469651
2020	17.7428631052696
2021	18.1432235291168
2022	18.3998028159039
2023	18.6522249966714