Year	Dollars
1997-01-01	424145625
2002-01-01	474513885
2003-01-01	84872805
2004-01-01	285186567
2005-01-01	88364801
2008-01-01	1608349303
2009-01-01	834373894
2010-01-01	623010362
2011-01-01	673202447
2012-01-01	1388405394
2013-01-01	1292222576
2014-01-01	661190804
2015-01-01	498090978
2016-01-01	256881939