Year	Dollars
1997-01-01	559125
2002-01-01	2894536
2003-01-01	2214925
2004-01-01	4517931
2005-01-01	10698229
2006-01-01	16614884
2007-01-01	27649720
2008-01-01	34878330
2009-01-01	16470994
2010-01-01	36915111
2011-01-01	35971494
2012-01-01	28355554
2013-01-01	27752700
2014-01-01	22463138
2015-01-01	14642190
2016-01-01	12001272