Year	Index
2003-01-01	30.2
2004-01-01	30.2
2005-01-01	30.8
2006-01-01	30.9
2007-01-01	31.1
2008-01-01	32.6
2009-01-01	31.2
2010-01-01	30.5
2011-01-01	32.1
2012-01-01	34.3
2013-01-01	32
2014-01-01	31.2
2015-01-01	33.8