Year	maximum value in 2004 = 100
2006	8.7884803661
2007	10.0885121694
2008	11.401408331
2009	10.4101794465
2010	9.5450700123
2011	10.4743691413
2012	12.0302014122
2013	11.6877684953
2014	9.9853516562
2015	10.0286034504
2016	12.6404519212
2017	12.4212041272
2018	12.3418745716
2019	13.0709076745
2020	12.4577609065
2021	12.8960525225