Year	Percent Change
2004-01-01	6.00019434
2005-01-01	29.85959391
2006-01-01	15.07464969
2007-01-01	36.58010428
2008-01-01	48.75663415
2009-01-01	12.52223578
2010-01-01	3.64299865
2011-01-01	25.00575113
2012-01-01	13.23448935
2013-01-01	6.91809520
2014-01-01	11.54744484
2015-01-01	3.50000000