Year	Dollars
1997-01-01	1637985
2003-01-01	458378
2004-01-01	668864
2005-01-01	805300
2006-01-01	2420823
2007-01-01	1857701
2008-01-01	5077627
2009-01-01	3837707
2010-01-01	4863851
2011-01-01	8371432
2012-01-01	17812458
2013-01-01	18295642
2014-01-01	6073957
2015-01-01	4650055
2016-01-01	6645039