Year	Index
2002-01-01	32
2003-01-01	32.8
2004-01-01	35.5
2005-01-01	36.5
2006-01-01	29.7
2007-01-01	28.7
2008-01-01	27.6
2009-01-01	28
2010-01-01	29
2013-01-01	29
2015-01-01	28.5