Year	Percent
2003-01-01	2.5641599999999998
2004-01-01	3.3136000000000000
2005-01-01	5.0622400000000000
2006-01-01	9.6579900000000000
2007-01-01	9.6579900000000000
2008-01-01	31.5740000000000000
2009-01-01	25.3167000000000000
2010-01-01	19.0329000000000000
2011-01-01	16.7301000000000000
2012-01-01	13.6863000000000000