Year	Dollars
1997-01-01	61658
2003-01-01	4525783
2004-01-01	28068484
2005-01-01	24833847
2006-01-01	30770923
2007-01-01	29079378
2008-01-01	59473321
2009-01-01	87458867
2010-01-01	253589342
2011-01-01	155228364
2012-01-01	319544521
2013-01-01	279424717
2014-01-01	168822882
2015-01-01	105798195
2016-01-01	50425446