Year	Dollars
1992-01-01	2719244826
1997-01-01	4558445119
2002-01-01	3970631038
2003-01-01	3875767147
2004-01-01	4804117980
2005-01-01	4702086573
2006-01-01	4601677937
2007-01-01	4861924879
2008-01-01	5207940593
2009-01-01	3696723657
2010-01-01	3974140779
2011-01-01	3989884588
2012-01-01	4120949657
2013-01-01	4382002050
2014-01-01	4696850893
2015-01-01	4841913828