Year	Dollars
1992-01-01	866253
1997-01-01	1725100
2002-01-01	355121
2003-01-01	1063353
2004-01-01	1411751
2005-01-01	1360307
2006-01-01	2914081
2007-01-01	3617826
2008-01-01	7870775
2009-01-01	18818527
2010-01-01	24232681
2011-01-01	18348131
2012-01-01	22153006
2013-01-01	21995391
2014-01-01	21884160
2015-01-01	16128535
2016-01-01	20711592