Year	Index
2003-01-01	25.3
2004-01-01	26.1
2005-01-01	26.8
2006-01-01	26.4
2007-01-01	27.1
2008-01-01	28.1
2009-01-01	27.3
2010-01-01	27.7
2011-01-01	27.6
2012-01-01	27.6
2013-01-01	28.8
2014-01-01	28.4
2015-01-01	29.2