Year Dollars 1997-01-01 388671 2002-01-01 508957 2003-01-01 145288 2004-01-01 1257092 2005-01-01 416614 2006-01-01 554081 2007-01-01 837579 2008-01-01 945549 2009-01-01 556663 2010-01-01 1066325 2011-01-01 752459 2012-01-01 799239 2013-01-01 2210427 2014-01-01 3936529 2015-01-01 2619974