Year	Dollars
1997-01-01	389849
2002-01-01	660448
2003-01-01	1519643
2004-01-01	4695553
2005-01-01	1607190
2006-01-01	3064326
2007-01-01	3056042
2008-01-01	7691142
2009-01-01	4155229
2010-01-01	11472729
2011-01-01	38854510
2012-01-01	62122267
2013-01-01	23774265
2014-01-01	18427675
2015-01-01	17012894
2016-01-01	12228328