Year	Percent
2003-01-01	1.60379489496273
2004-01-01	2.28904847396768
2005-01-01	2.02402135231317
2006-01-01	2.12532865907099
2007-01-01	1.85107416976453
2008-01-01	2.30437443367781
2009-01-01	2.43107436656042
2010-01-01	2.05743086549429
2011-01-01	2.31694734080835
2012-01-01	2.49634606807274
2013-01-01	2.86210462909480