Year	Dollars
1992-01-01	2835160
1997-01-01	7006030
2002-01-01	4106964
2003-01-01	8738638
2004-01-01	10741711
2005-01-01	13135142
2006-01-01	11377768
2007-01-01	19179666
2008-01-01	58002738
2009-01-01	46440617
2010-01-01	38590361
2011-01-01	18906848
2012-01-01	32094341
2013-01-01	30130449
2014-01-01	19560715
2015-01-01	16398977
2016-01-01	9183361