Year	Dollars
1997-01-01	36205945
2002-01-01	92960439
2003-01-01	220279071
2004-01-01	161224360
2005-01-01	202972308
2006-01-01	452891267
2007-01-01	155766859
2008-01-01	103407671
2009-01-01	156804706
2010-01-01	168298899
2011-01-01	169451235
2012-01-01	130301417
2013-01-01	148071896
2014-01-01	157078035
2015-01-01	77723491
2016-01-01	227890380