Year	% of total population
1960	8.36872088560871
1961	8.456973693825008
1962	8.540801477446056
1963	8.619778247679363
1964	8.708279066994356
1965	8.807156167179837
1966	8.915132456567495
1967	9.036505105919776
1968	9.143776673602138
1969	9.233650440519487
1970	9.336669488323821
1971	9.443594842233653
1972	9.564595289571638
1973	9.696886027968167
1974	9.831463415049868
1975	9.96952805448514
1976	10.107357214551202
1977	10.250120783493426
1978	10.388957023333836
1979	10.509627033000662
1980	10.57715444650344
1981	10.584682301762294
1982	10.564223540706992
1983	10.525006362199166
1984	10.53265648173131
1985	10.636653669131896
1986	10.781137801742794
1987	10.92255725828297
1988	11.080615551665122
1989	11.231572030170513
1990	11.360857925475651
1991	11.503262445433919
1992	11.651905188186825
1993	11.791316722410505
1994	11.940159119131264
1995	12.096895244578763
1996	12.24185190581566
1997	12.372435634295552
1998	12.494262134776934
1999	12.613249432960984
2000	12.741914959845184
2001	12.896350841914595
2002	13.051708364774361
2003	13.19517854344549
2004	13.34831591127274
2005	13.52312461392778
2006	13.702775755058292
2007	13.87517047916155
2008	14.056980131448071
2009	14.25099617191228
2010	14.42261533059952
2011	14.624247319119663
2012	14.92545756166792
2013	15.266746393418126
2014	15.597898837550325
2015	15.892754185303062
2016	16.196058093785066
2017	16.498025600381546
2018	16.78672544946704
2019	17.09371226240099
2020	17.3964708979716
2021	17.69235207882513
2022	17.987629647045047
2023	18.331852403939067