Year	Index
2003-01-01	34.9
2004-01-01	34.3
2005-01-01	33.8
2006-01-01	33.7
2007-01-01	32.9
2008-01-01	33.8
2009-01-01	33.8
2010-01-01	34.7
2011-01-01	35.1
2012-01-01	35.2
2013-01-01	34.9
2014-01-01	34.7
2015-01-01	35.4