Year	Dollars
1992-01-01	294087818
1997-01-01	623754343
2002-01-01	195783174
2003-01-01	190251289
2004-01-01	196762266
2005-01-01	246157436
2006-01-01	392845260
2007-01-01	516232230
2008-01-01	602780275
2009-01-01	462239458
2010-01-01	624523663
2011-01-01	811946413
2012-01-01	608336495
2013-01-01	386739868
2014-01-01	420654439
2015-01-01	349859475
2016-01-01	279261880