Year	Dollars
1992-01-01	972965
1997-01-01	1160646
2002-01-01	5986139
2003-01-01	4666534
2004-01-01	9724729
2005-01-01	14985944
2006-01-01	20641168
2007-01-01	28184678
2008-01-01	32404857
2009-01-01	33007450
2010-01-01	24445849
2011-01-01	22890631
2012-01-01	14435076
2013-01-01	12371579
2014-01-01	18487365
2015-01-01	18767327
2016-01-01	15484524