Year	Dollars
1992-01-01	566382082
1997-01-01	885628412
2002-01-01	1047259538
2003-01-01	630327089
2004-01-01	1339582807
2005-01-01	1892357984
2006-01-01	2694895278
2007-01-01	2969587463
2008-01-01	3893811761
2009-01-01	3251368698
2010-01-01	3245764777
2011-01-01	4295348326
2012-01-01	4907564609
2013-01-01	3042075560
2014-01-01	2342668026
2015-01-01	1865457907
2016-01-01	1114694001