Year	Dollars
1997-01-01	376846
2002-01-01	1120758
2003-01-01	620286
2004-01-01	3816767
2005-01-01	6400293
2006-01-01	15448205
2007-01-01	47090256
2008-01-01	93097747
2009-01-01	59703996
2010-01-01	87490718
2011-01-01	137527680
2012-01-01	91597063
2013-01-01	99453472
2014-01-01	119786461
2015-01-01	72982121
2016-01-01	25316580