Year	Dollars
1997-01-01	2327846
2002-01-01	8054632
2003-01-01	14030635
2004-01-01	21908355
2005-01-01	14049533
2006-01-01	10099813
2007-01-01	19955811
2008-01-01	20953805
2009-01-01	11019848
2010-01-01	11997048
2011-01-01	21636896
2012-01-01	25968094
2013-01-01	27755989
2014-01-01	35915271
2015-01-01	29749713
2016-01-01	33174928