Year	maximum value in 2004 = 100
2006	1.8932896209
2012	2.1460085483
2013	1.8900378775
2014	2.0856726307
2015	2.0856726307
2016	1.9854966817
2017	1.985736767
2018	1.9854966817
2019	1.9854966817
2020	5.3100683746
2021	5.2093029794