Year	Dollars
1992-01-01	7965072
1997-01-01	43194310
2002-01-01	38741549
2003-01-01	42420410
2004-01-01	71749873
2005-01-01	105878322
2006-01-01	145328526
2007-01-01	190906475
2008-01-01	224946999
2009-01-01	315058568
2010-01-01	487782417
2011-01-01	601629448
2012-01-01	400575897
2013-01-01	347281699
2014-01-01	359287544
2015-01-01	330863205
2016-01-01	318373016