Year	Dollars
1992-01-01	16437564
1997-01-01	24617223
2002-01-01	21278075
2003-01-01	20687608
2004-01-01	22216151
2005-01-01	21643072
2006-01-01	30302485
2007-01-01	48975063
2008-01-01	56037516
2009-01-01	105879276
2010-01-01	93914500
2011-01-01	73615556
2012-01-01	53197604
2013-01-01	25397705
2014-01-01	16920172
2015-01-01	11652173
2016-01-01	21040569