Year	Dollars
1992-01-01	3087038
1997-01-01	121884192
2002-01-01	47159903
2003-01-01	50026470
2004-01-01	41753300
2005-01-01	25327753
2006-01-01	33500577
2007-01-01	30865413
2008-01-01	27007607
2009-01-01	11895680
2010-01-01	20681438
2011-01-01	14655412
2012-01-01	14027131
2013-01-01	19027537
2014-01-01	50241963
2015-01-01	147416549
2016-01-01	159184013