Year	Index
1993-01-01	39.5
2003-01-01	37.2
2004-01-01	33.6
2005-01-01	33.4
2006-01-01	33.7
2007-01-01	31.2
2008-01-01	31.9
2009-01-01	31.4
2010-01-01	32
2011-01-01	32.5
2012-01-01	32.9
2013-01-01	35.1
2014-01-01	34.6
2015-01-01	32.7