Year	% of total population
1960	3.57292576419214
1961	3.4554468623145
1962	3.35339060211393
1963	3.27202680950999
1964	3.24567945267663
1965	3.25511394624747
1966	3.26618139284381
1967	3.28830508795995
1968	3.31901931335012
1969	3.35956652995302
1970	3.39616532265943
1971	3.43157055756922
1972	3.48659884819604
1973	3.56085615536027
1974	3.64621915238425
1975	3.74007459840203
1976	3.84165631550345
1977	3.94592784521228
1978	4.04389450993068
1979	4.13077757421636
1980	4.21514843409571
1981	4.30895503727701
1982	4.40871492162213
1983	4.5047044203799
1984	4.5910285861191
1985	4.6518389005225
1986	4.68394579820457
1987	4.69274464239608
1988	4.67265498566912
1989	4.63402920986469
1990	4.62226474902006
1991	4.62675348432845
1992	4.61286118327142
1993	4.60604966954639
1994	4.64087157500174
1995	4.69247614787317
1996	4.72399629426184
1997	4.76302549726683
1998	4.81756383997362
1999	4.89725123840242
2000	5.01701465167654
2001	5.13946108620072
2002	5.24532787228819
2003	5.35051943850714
2004	5.47145861356876
2005	5.60401835516555
2006	5.73406169319566
2007	5.86691792493846
2008	5.99112446422911
2009	6.09648246940347
2010	6.19266915278939
2011	6.31062309829342
2012	6.46899317124752
2013	6.64631142227408
2014	6.83150404362541
2015	7.0294565155113
2016	7.2294694255846
2017	7.43183299082753
2018	7.67491941533665
2019	7.96785125458217
2020	8.27893222526057
2021	8.5677932756484
2022	8.89120063221979
2023	9.28400830296869