Year	Dollars
1992-01-01	18347469
1997-01-01	16638781
2002-01-01	6015762
2003-01-01	7607636
2004-01-01	10180394
2005-01-01	15814759
2006-01-01	9514736
2007-01-01	25350315
2008-01-01	25215380
2009-01-01	13165442
2010-01-01	21457473
2011-01-01	27147714
2012-01-01	20194970
2013-01-01	20307360
2014-01-01	10810534
2015-01-01	5458706
2016-01-01	9435387