Year	Percent
2005-01-01	4.27619041362807
2006-01-01	3.98894922803024
2007-01-01	3.58502350497783
2008-01-01	3.62025488107550
2009-01-01	4.55932799906341
2010-01-01	4.82056029000332
2011-01-01	4.84958843877433
2012-01-01	5.45998301229452