Year	Index
2008-01-01	22.7579000000000000
2009-01-01	37.4087000000000000
2010-01-01	27.6558000000000000
2011-01-01	16.2129000000000000
2012-01-01	11.4274000000000000
2013-01-01	7.4630399999999995
2014-01-01	11.9158000000000000
2015-01-01	18.8747000000000000
2016-01-01	19.6066000000000000
2017-01-01	16.0244000000000000