Year	Dollars
1997-01-01	6466655
2002-01-01	54546759
2003-01-01	54667155
2004-01-01	50499815
2005-01-01	95610035
2006-01-01	97654643
2007-01-01	105022921
2008-01-01	94006532
2009-01-01	81549107
2010-01-01	93947063
2011-01-01	145029286
2012-01-01	200023669
2013-01-01	280049708
2014-01-01	306858138
2015-01-01	287505402