Year Dollars 1997-01-01 626794 2002-01-01 4834413 2003-01-01 2080007 2004-01-01 3693743 2005-01-01 3688112 2006-01-01 4804418 2007-01-01 6246114 2008-01-01 6306837 2009-01-01 4359773 2010-01-01 5949558 2011-01-01 7199242 2012-01-01 6788187 2013-01-01 12107610 2014-01-01 40900039 2015-01-01 39760757 2016-01-01 39711087