Year	Dollars
1992-01-01	8177292
1997-01-01	8673277
2002-01-01	19893914
2003-01-01	9234209
2004-01-01	9820259
2005-01-01	15281070
2006-01-01	11736424
2007-01-01	20073509
2008-01-01	26053437
2009-01-01	23990378
2010-01-01	21474162
2011-01-01	24381615
2012-01-01	39458373
2013-01-01	36753613
2014-01-01	32902770
2015-01-01	27316994
2016-01-01	25293493