Year	Dollars
1997-01-01	153379
2002-01-01	398838
2003-01-01	166878
2004-01-01	633974
2005-01-01	1311193
2006-01-01	394806
2007-01-01	839326
2008-01-01	761800
2009-01-01	1969711
2010-01-01	1845386
2011-01-01	1859335
2012-01-01	3521460
2013-01-01	6463143
2014-01-01	6179995
2015-01-01	3421544
2016-01-01	2760290