Year	% of total population
1960	37.461862677633
1961	38.3788577222708
1962	38.7802786388838
1963	38.9427463950298
1964	38.9074967841601
1965	38.7275010418537
1966	38.4566184371464
1967	38.1122773872504
1968	37.6898590604218
1969	37.2156518457269
1970	36.7665474591356
1971	36.339217080089
1972	35.8588413872918
1973	35.2951287783031
1974	34.6800644979889
1975	34.0459767188739
1976	33.4220491522176
1977	32.8487892051406
1978	32.3414525430243
1979	31.9357857025411
1980	31.6399957509892
1981	31.451851241659
1982	31.3773495595482
1983	31.4043106104098
1984	31.5125320764733
1985	31.6439497812103
1986	31.7340592025902
1987	31.7671808842165
1988	31.7497697891555
1989	31.7432737548371
1990	31.7234756126663
1991	31.6226360779277
1992	31.4865323074592
1993	31.3248375397983
1994	31.1612554278635
1995	30.975685400872
1996	30.5524243232768
1997	29.8922409290796
1998	29.16105909981
1999	28.5341389482543
2000	27.9547086791847
2001	27.2376504986328
2002	26.4762096368575
2003	25.7468486146722
2004	25.1267006390478
2005	24.6493788087229
2006	24.3282709172895
2007	24.18815272431
2008	24.2233530826412
2009	24.3798601403206
2010	24.623489051026
2011	24.9722004273072
2012	25.4210106149178
2013	25.9171226073688
2014	26.4495129189351
2015	27.0021989628395
2016	27.5497913895485
2017	28.0564192461905
2018	28.5021673473639
2019	28.8901539053158
2020	29.2444540596271
2021	29.5326058851824
2022	29.6657521049337
2023	29.634720310348