Year	Dollars
1997-01-01	7598291
2002-01-01	6096707
2003-01-01	7147302
2004-01-01	14379934
2005-01-01	14257725
2007-01-01	19584999
2008-01-01	17365034
2010-01-01	11959045
2011-01-01	15251892
2012-01-01	17257952
2013-01-01	11743928
2014-01-01	6075074
2015-01-01	4441281