Year	Percent
2005-01-01	50.3942052731106
2006-01-01	50.3221249864334
2007-01-01	50.9457590615570
2008-01-01	51.0976406545683
2009-01-01	49.5653815880654
2010-01-01	49.0428527560770
2011-01-01	48.9962106755637
2012-01-01	48.6098432741928