Year	Percent
2004-01-01	1.01
2005-01-01	1.11
2006-01-01	1.01
2007-01-01	1.08
2008-01-01	1.06
2009-01-01	0.95
2010-01-01	0.93
2011-01-01	1.05
2012-01-01	1.07
2013-01-01	1.16
2014-01-01	1.26
2015-01-01	1.39
2016-01-01	1.39