Year	Dollars
1992-01-01	2578102061
1997-01-01	8203793072
2002-01-01	8586560113
2003-01-01	9045436596
2004-01-01	10432854900
2005-01-01	12145509722
2006-01-01	13533010122
2007-01-01	14896864044
2008-01-01	16350737476
2009-01-01	11303248541
2010-01-01	15652669823
2011-01-01	18907367067
2012-01-01	20273045983
2013-01-01	21657579320
2014-01-01	27349205840
2015-01-01	21674348320
2016-01-01	16278703438