Year	Dollars
1992-01-01	446713673
1997-01-01	679182115
2002-01-01	536945490
2003-01-01	462129608
2004-01-01	510543188
2005-01-01	428409201
2006-01-01	551505274
2007-01-01	670550187
2008-01-01	691816248
2009-01-01	1061919644
2010-01-01	1162185267
2011-01-01	1388582558
2012-01-01	933101092
2013-01-01	644404244
2014-01-01	554286192
2015-01-01	515140717
2016-01-01	458161085