Year	Dollars
1992-01-01	12867201
1997-01-01	11463809
2002-01-01	4252448
2003-01-01	5920185
2004-01-01	16162461
2005-01-01	58640535
2006-01-01	9365522
2007-01-01	27150994
2008-01-01	35060810
2009-01-01	47910179
2010-01-01	8447571
2011-01-01	21537400
2012-01-01	51645330
2013-01-01	26002084
2014-01-01	28498359
2015-01-01	34163034
2016-01-01	44130140