Year	% of total population
1960	5.710040812641198
1961	5.7557015442489545
1962	5.800740855531386
1963	5.847575365019133
1964	5.904949064823073
1965	5.967479167845725
1966	6.0223642659063
1967	6.0789459825140915
1968	6.148387936855072
1969	6.214248408061471
1970	6.278285447474803
1971	6.350924156195409
1972	6.4246853714481444
1973	6.469604284578148
1974	6.494733638289344
1975	6.514481522554906
1976	6.517199689544364
1977	6.517284415761142
1978	6.51226556332593
1979	6.496712930040343
1980	6.46627528707237
1981	6.416147705679895
1982	6.354291133252028
1983	6.295662499875377
1984	6.23971752329178
1985	6.182165131933989
1986	6.146139793797103
1987	6.127971327638062
1988	6.113230300458715
1989	6.112151030505296
1990	6.117467869275623
1991	6.143016261981229
1992	6.218666938190718
1993	6.304501623917359
1994	6.381429113011885
1995	6.4617240624898855
1996	6.527460709660805
1997	6.586354597371547
1998	6.636613154008717
1999	6.696976564897983
2000	6.7763092142658765
2001	6.862793574380632
2002	6.955671177937518
2003	7.047558759263624
2004	7.132796447356662
2005	7.2069577025277445
2006	7.2703153341990685
2007	7.325616117173927
2008	7.378258546994573
2009	7.442858562750287
2010	7.525203831350327
2011	7.630171804790023
2012	7.748714394590741
2013	7.882021800535808
2014	8.041453859457661
2015	8.19635793490186
2016	8.327571163865073
2017	8.451513433788318
2018	8.585033029558984
2019	8.748007998015531
2020	8.926884350437916
2021	9.085649384815639
2022	9.269973775148022
2023	9.50495555526745