Year	Dollars
1997-01-01	7097033
2002-01-01	4153193
2003-01-01	18655435
2004-01-01	4757915
2005-01-01	7497138
2006-01-01	14643128
2007-01-01	25994817
2008-01-01	20467010
2009-01-01	23286398
2010-01-01	15496457
2011-01-01	7484794
2012-01-01	18014704
2013-01-01	8070739
2014-01-01	6941696
2015-01-01	6502883
2016-01-01	13803903