Year	Dollars
1997-01-01	1262517
2002-01-01	251650
2003-01-01	582757
2004-01-01	356672
2005-01-01	1054784
2006-01-01	1546515
2007-01-01	621619
2008-01-01	3324370
2009-01-01	900056
2010-01-01	9881066
2012-01-01	5791009
2013-01-01	16589645
2014-01-01	12856686
2015-01-01	22326585