Year	% of total population
1960	8.99996618948076
1961	9.146999956440279
1962	9.304468044586848
1963	9.47080053650931
1964	9.639897155570617
1965	9.819581949077591
1966	9.971110637768668
1967	10.098606223224255
1968	10.219588671051662
1969	10.335644091678471
1970	10.465177640244375
1971	10.607451974750466
1972	10.76104801660409
1973	10.910260995083267
1974	11.045537113949079
1975	11.203221010322286
1976	11.369101382538464
1977	11.526907153111198
1978	11.734924493126414
1979	11.943906258143608
1980	12.124468277787088
1981	12.315629183599766
1982	12.51482345247081
1983	12.723124547945364
1984	12.937245045827442
1985	13.185288799891346
1986	13.312516584021447
1987	13.287886484087863
1988	13.267896951114553
1989	13.418945108760058
1990	13.65797807344996
1991	13.788674647405513
1992	13.932226594243389
1993	13.985661294619309
1994	13.935397865671135
1995	13.900020068838376
1996	13.874341042130972
1997	13.86188130318472
1998	13.857401657255014
1999	13.838156515266075
2000	13.809574633190097
2001	13.989151397240803
2002	14.45268254665178
2003	14.738454086882777
2004	14.997913659182622
2005	15.261238714542891
2006	15.492193023517101
2007	15.711476410997093
2008	15.956867084565612
2009	16.19637627690883
2010	16.44198123776046
2011	16.68846300818363
2012	16.928332325926704
2013	17.133108009990206
2014	17.306737682410894
2015	17.49432396892111
2016	17.695251087919985
2017	17.90346931654519
2018	18.112616346362305
2019	18.30534331666466
2020	18.473683717153772
2021	18.673436910916852
2022	19.903630216221043
2023	20.031724457535102