Year	Index
2003-01-01	32.9
2004-01-01	33.6
2005-01-01	33.7
2006-01-01	32.7
2007-01-01	31.9
2008-01-01	30.9
2009-01-01	32.7
2010-01-01	32.3
2011-01-01	32.9
2012-01-01	33.2
2013-01-01	33.5
2014-01-01	31.9
2015-01-01	31.8