Year	Dollars
1997-01-01	893768
2002-01-01	1370884
2003-01-01	6403546
2004-01-01	13092593
2005-01-01	20680669
2006-01-01	44532319
2007-01-01	74078712
2008-01-01	117486266
2009-01-01	54440340
2010-01-01	63393249
2011-01-01	109844572
2012-01-01	61408766
2013-01-01	63656773
2014-01-01	37485433
2015-01-01	7497906
2016-01-01	24283046