Year	Dollars
1992-01-01	231387530
1997-01-01	265690482
2002-01-01	242666253
2003-01-01	179042251
2004-01-01	198682504
2005-01-01	88691092
2006-01-01	248916665
2007-01-01	357663011
2008-01-01	496834534
2009-01-01	191382483
2010-01-01	330389654
2011-01-01	458049262
2012-01-01	286007694
2013-01-01	242298058
2014-01-01	285913115
2015-01-01	101394688
2016-01-01	202870771