Year	% of total population
1960	4.271221493803033
1961	4.245786622461154
1962	4.230885673320887
1963	4.205951578516882
1964	4.187171629916983
1965	4.194350731655229
1966	4.221818522234199
1967	4.265386806375863
1968	4.316617257846113
1969	4.364631775373934
1970	4.409352676948553
1971	4.458488739631676
1972	4.513112658388607
1973	4.571750591246852
1974	4.645458724221425
1975	4.727381568361455
1976	4.8069558473617935
1977	4.892001201856827
1978	4.988309513994338
1979	5.087064442380682
1980	5.163624837838841
1981	5.208535284484099
1982	5.233940613624422
1983	5.259976611024713
1984	5.300397827490184
1985	5.349218560043401
1986	5.403632009495201
1987	5.463438431325599
1988	5.539671977385165
1989	5.643182894198873
1990	5.7578296683655905
1991	5.87312721715354
1992	6.005915246935501
1993	6.1623539936803375
1994	6.318814512956246
1995	6.472801089145483
1996	6.6215789427942875
1997	6.768107786059594
1998	6.926972064205983
1999	7.085029134381852
2000	7.242218591937512
2001	7.410375901201419
2002	7.58717976021091
2003	7.763944481865516
2004	7.927640223047114
2005	8.081972254741956
2006	8.231967588426617
2007	8.354646261896457
2008	8.443344502052177
2009	8.529750475371474
2010	8.63971732749556
2011	8.796693755539529
2012	8.999767303585205
2013	9.23857580884016
2014	9.521480951393094
2015	9.863078315561737
2016	10.233916377241982
2017	10.641162349034145
2018	11.080598589805268
2019	11.534788995331985
2020	12.015055832517648
2021	12.464582942510543
2022	12.9064177061476
2023	13.365758880757985