Year	Dollars
1997-01-01	1348006
2002-01-01	522368
2003-01-01	1597236
2004-01-01	599420
2005-01-01	2188910
2006-01-01	4083151
2007-01-01	10054920
2008-01-01	8770463
2009-01-01	3359026
2010-01-01	13255689
2011-01-01	9621896
2012-01-01	5576040
2013-01-01	7472544
2014-01-01	9908868
2015-01-01	4941810
2016-01-01	4988827