Year	% of total population
1960	25.185372240642
1961	24.6757729708499
1962	24.2282249796034
1963	23.9420211706858
1964	23.8146687278436
1965	23.7656915641499
1966	23.7908282519213
1967	23.80754211636
1968	23.6991996686754
1969	23.5207224768323
1970	23.3346946407382
1971	23.1751616408527
1972	23.0620182079078
1973	22.9481264254287
1974	22.8187832796687
1975	22.6745963610591
1976	22.4673262616778
1977	22.1708344632065
1978	21.7905412679367
1979	21.3485965251718
1980	20.8460717886484
1981	20.2520157574214
1982	19.6609588252804
1983	19.1810482986903
1984	18.7914468825774
1985	18.452707438218
1986	18.107133906542
1987	17.7437823750986
1988	17.4386917791611
1989	17.2175409481625
1990	17.0420342713126
1991	16.9470516107457
1992	16.9764324740425
1993	17.0694998272451
1994	17.2020519776413
1995	17.3907703368918
1996	17.6128839237767
1997	17.8457062465543
1998	18.0749093412483
1999	18.2900508171841
2000	18.4743350768773
2001	18.6105354504133
2002	18.698720154714
2003	18.7422436070273
2004	18.7353593867773
2005	18.6826640300755
2006	18.6085052129821
2007	18.5012852841805
2008	18.3634331264489
2009	18.1974890942688
2010	18.0032566192358
2011	17.7981734629169
2012	17.5762206457661
2013	17.3486007934213
2014	17.1284909132175
2015	16.9219182936477
2016	16.7541082595902
2017	16.6289295920396
2018	16.5122307682437
2019	16.3894926704806
2020	16.2688363392114
2021	16.1651541305828
2022	16.0597246484197
2023	15.9469611547319