Year	Percent
2005-01-01	4.29893351327045
2006-01-01	3.92349804951360
2007-01-01	3.43753274150888
2008-01-01	3.38258472402921
2009-01-01	4.32041931472498
2010-01-01	4.64019577757779
2011-01-01	4.65457117123876
2012-01-01	5.06476562968115