Year	Dollars
1997-01-01	905844
2002-01-01	270192
2003-01-01	444038
2005-01-01	759031
2006-01-01	1233070
2007-01-01	1501469
2009-01-01	3466292
2010-01-01	1533864
2011-01-01	3076883
2012-01-01	2419808
2013-01-01	3169434
2014-01-01	2545795
2015-01-01	2553792
2016-01-01	416305