Year	Dollars
1997-01-01	1265094
2002-01-01	424588
2003-01-01	111607
2004-01-01	671160
2005-01-01	1572927
2006-01-01	539298
2007-01-01	2260187
2010-01-01	6265796
2011-01-01	21046185
2012-01-01	20843006
2013-01-01	16694847
2014-01-01	8064724
2015-01-01	11090805
2016-01-01	36059960