Year	Dollars
1992-01-01	220712278
1997-01-01	456419315
2002-01-01	497828841
2003-01-01	552082196
2004-01-01	731989208
2005-01-01	514092908
2006-01-01	611150810
2007-01-01	512979938
2008-01-01	454223113
2009-01-01	347296672
2010-01-01	533808978
2011-01-01	672644374
2012-01-01	519451771
2013-01-01	481181053
2014-01-01	527177818
2015-01-01	551481754
2016-01-01	596456178