Year	Dollars
1992-01-01	2195713
1997-01-01	6061155
2002-01-01	6198692
2003-01-01	6807234
2004-01-01	7528101
2005-01-01	8147321
2006-01-01	7385511
2007-01-01	7997206
2008-01-01	19740693
2009-01-01	19239579
2010-01-01	18809049
2011-01-01	21073406
2012-01-01	31959327
2013-01-01	40111765
2014-01-01	22034034
2015-01-01	14401401
2016-01-01	21458763