Year	Dollars
1992-01-01	5479390
1997-01-01	28739996
2002-01-01	10993180
2003-01-01	13267096
2004-01-01	25988031
2005-01-01	16949858
2006-01-01	121266684
2007-01-01	36815203
2008-01-01	190961595
2009-01-01	75695452
2010-01-01	152158012
2011-01-01	272562763
2012-01-01	90374978
2013-01-01	64814672
2014-01-01	273040068
2015-01-01	251123135
2016-01-01	356125028