Year	Dollars
1997-01-01	654919
2002-01-01	229671
2003-01-01	181665
2004-01-01	301421
2006-01-01	290536
2007-01-01	1321706
2010-01-01	1380605
2011-01-01	4116595
2012-01-01	5204913
2013-01-01	7341393
2015-01-01	3528695