Year	maximum value in 2004 = 100
2006	10.4676108089
2007	9.6215400741
2008	10.9410540839
2009	9.5784503966
2010	8.4558228217
2011	9.3721422846
2012	10.3244260439
2013	10.4111029624
2014	7.9267677552
2015	10.4246926028
2016	10.9701988498
2017	12.2800178997
2018	11.1726078386
2019	14.884926482
2020	7.88121296
2021	9.1730738304