Year	Index
2007-01-01	19.2106
2008-01-01	28.9084
2009-01-01	38.3228
2010-01-01	28.6234
2011-01-01	17.2901
2012-01-01	18.5884
2013-01-01	12.4749
2014-01-01	10.4348
2015-01-01	10.0183
2016-01-01	11.3672
2017-01-01	10.4702