Year	Percent
2004-01-01	100.00000000000000
2005-01-01	81.08714000000000
2006-01-01	76.21110000000000
2007-01-01	91.13938000000000
2008-01-01	76.77105999999999
2009-01-01	87.11048000000001
2010-01-01	78.43429000000000
2011-01-01	71.99248000000000
2012-01-01	69.16500000000000
2013-01-01	73.90942000000000