Year	Dollars
1997-01-01	4824415
2002-01-01	3936971
2003-01-01	2345465
2004-01-01	4071146
2005-01-01	10128093
2006-01-01	5274372
2007-01-01	4836600
2008-01-01	18202682
2009-01-01	20845180
2010-01-01	14374515
2011-01-01	8117342
2012-01-01	3458067
2013-01-01	4482689
2014-01-01	4761840
2015-01-01	12357362
2016-01-01	5234961