Year	Dollars
1997-01-01	3449270
2002-01-01	6004962
2003-01-01	8604491
2004-01-01	12213774
2005-01-01	11212104
2006-01-01	14901757
2007-01-01	32875168
2008-01-01	64510321
2009-01-01	58334456
2010-01-01	60908513
2011-01-01	69769592
2012-01-01	113469767
2013-01-01	128833859
2014-01-01	130248845
2015-01-01	106882272
2016-01-01	105405799