Year	Percent
2005-01-01	36.6366124569654
2006-01-01	37.4038877088267
2007-01-01	38.1545109066506
2008-01-01	38.6282206822825
2009-01-01	38.2917516699169
2010-01-01	38.1548067026426
2011-01-01	38.3127945928667
2012-01-01	38.1607378005864