Year	Ratio
2003-01-01	1.023689985275270
2004-01-01	0.987240016460419
2006-01-01	1.029809951782230
2007-01-01	0.985279977321625
2008-01-01	0.956839978694916
2009-01-01	1.015740036964420
2010-01-01	0.942279994487762
2011-01-01	1.008610010147090
2012-01-01	1.024189949035640
2014-01-01	0.992200016975403
2015-01-01	0.984139978885651
2016-01-01	0.961830019950867