Year	Percent
2005-01-01	5.60641514497409
2006-01-01	5.20964487989702
2007-01-01	4.42566938909897
2008-01-01	3.85883581426459
2009-01-01	3.98691764728717
2010-01-01	3.64703971692876
2011-01-01	3.02502594710352
2012-01-01	2.79717559115076
2013-01-01	2.73765438340907