Year	Dollars
1992-01-01	2649963
1997-01-01	4153728
2002-01-01	3522973
2003-01-01	7021009
2004-01-01	12134229
2005-01-01	15507401
2006-01-01	21082893
2007-01-01	28153653
2008-01-01	27579116
2009-01-01	22010446
2010-01-01	10399674
2011-01-01	10213063
2012-01-01	8822079
2013-01-01	13867985
2014-01-01	12865960
2015-01-01	13303528
2016-01-01	11662901