Year	Percent
2000-01-01	1.59472018329977
2001-01-01	1.45189471350892
2002-01-01	1.59687672760630
2003-01-01	1.72046089647313
2004-01-01	1.63369612081691
2005-01-01	1.66046586942667
2006-01-01	1.78862287789695
2007-01-01	2.27631013706793
2008-01-01	2.62658878823796
2009-01-01	4.25941634508571
2010-01-01	5.01445506284317
2011-01-01	5.44848925631000
2012-01-01	5.53222194242904
2013-01-01	5.45482610551506