Year	Index
2003-01-01	38.7
2004-01-01	38.9
2005-01-01	38.5
2006-01-01	38.1
2007-01-01	36.7
2008-01-01	36.6
2009-01-01	34.9
2010-01-01	35.8
2011-01-01	36.3
2012-01-01	36
2013-01-01	36.2
2014-01-01	35.6
2015-01-01	35.5