Year	Dollars
1997-01-01	739511
2002-01-01	1483794
2004-01-01	720375
2005-01-01	238693
2006-01-01	3448119
2007-01-01	681830
2008-01-01	1562391
2009-01-01	352411
2010-01-01	1472760
2011-01-01	1673570
2012-01-01	4399178
2013-01-01	8158774
2014-01-01	3001770
2015-01-01	5889282
2016-01-01	4899646