Year	% of total population
1960	7.71635019639641
1961	7.85145734074357
1962	8.01061457817744
1963	8.18511767428129
1964	8.39296444065684
1965	8.66433496480584
1966	8.97044204987282
1967	9.24580249673495
1968	9.47366456337805
1969	9.68097990529851
1970	9.8872299302843
1971	10.0911685749632
1972	10.2826198311079
1973	10.4685328963381
1974	10.6674529081078
1975	10.8597505454599
1976	11.0108164932092
1977	11.1433449220129
1978	11.2578944225822
1979	11.3308930218713
1980	11.2519684397546
1981	10.9898166772294
1982	10.6559745139412
1983	10.3133927840913
1984	10.0989594070558
1985	10.0575769339899
1986	10.1158684391825
1987	10.2291894970493
1988	10.3811844325811
1989	10.5650496419517
1990	10.7686261596033
1991	10.9933297232507
1992	11.241023632328
1993	11.5124157465703
1994	11.8060517743613
1995	12.1554050864193
1996	12.5369568433487
1997	12.8961648946542
1998	13.2365729356896
1999	13.5712023747131
2000	13.8995907453313
2001	14.2326027862982
2002	14.5311924233037
2003	14.7588621057031
2004	14.9854398823271
2005	15.2333786500603
2006	15.4867264328348
2007	15.7561996195191
2008	16.0257232798091
2009	16.2194743979452
2010	16.25613824028
2011	16.364642526361
2012	16.6721111999204
2013	17.0364236772842
2014	17.4491798949066
2015	17.894867607751
2016	18.3266188840298
2017	18.761151395926
2018	19.2242217667874
2019	19.6906954725528
2020	20.1009991778588
2021	20.5009461361761
2022	20.9591366157132
2023	21.419349999257