Year	Dollars
1992-01-01	48759608
1997-01-01	57272959
2002-01-01	262011243
2003-01-01	35200421
2004-01-01	118831476
2005-01-01	93957095
2006-01-01	52471417
2007-01-01	219598519
2008-01-01	359350076
2009-01-01	251943348
2010-01-01	522666928
2011-01-01	519784769
2012-01-01	482717267
2013-01-01	643202204
2014-01-01	524874205
2015-01-01	343954908
2016-01-01	287289868