Year	Percent
2004-01-01	14.5598
2005-01-01	13.7291
2006-01-01	40.4842
2007-01-01	30.8126
2008-01-01	39.3041
2009-01-01	38.9723
2010-01-01	47.1067
2011-01-01	43.3893
2012-01-01	40.2470