Year Dollars 1997-01-01 128358 2002-01-01 190834 2003-01-01 238745 2004-01-01 514004 2005-01-01 527603 2006-01-01 255245 2007-01-01 858001 2008-01-01 2824472 2009-01-01 1582130 2010-01-01 1666663 2011-01-01 9672851 2012-01-01 5096620 2013-01-01 9755761 2014-01-01 12302549 2015-01-01 11967379 2016-01-01 7512941