Year	Dollars
1992-01-01	13244559
1997-01-01	7867554
2002-01-01	3700732
2003-01-01	4005056
2004-01-01	2162315
2005-01-01	3214841
2006-01-01	4878122
2007-01-01	15736785
2008-01-01	21599743
2009-01-01	19112652
2010-01-01	30535662
2011-01-01	34745162
2012-01-01	45216911
2013-01-01	39377077
2014-01-01	38697014
2015-01-01	37301870
2016-01-01	23094851