Year	Dollars
1992-01-01	4013690
1997-01-01	7765338
2002-01-01	21305676
2003-01-01	33106821
2004-01-01	75238481
2005-01-01	100066820
2006-01-01	156629880
2007-01-01	225771508
2008-01-01	358035786
2009-01-01	117808516
2010-01-01	141314789
2011-01-01	224136244
2012-01-01	417795680
2013-01-01	474280124
2014-01-01	354505153
2015-01-01	118076517
2016-01-01	107084727