Year Dollars 1997-01-01 687082 2002-01-01 1187269 2003-01-01 1158847 2004-01-01 2523046 2005-01-01 2149490 2006-01-01 4096549 2007-01-01 2639798 2008-01-01 33703735 2009-01-01 4413659 2010-01-01 2619103 2011-01-01 3475051 2012-01-01 3397171 2013-01-01 4880698 2014-01-01 5312104 2015-01-01 25488563 2016-01-01 7117473