Year Dollars 1997-01-01 1036716 2002-01-01 1110685 2003-01-01 2479113 2004-01-01 5391170 2005-01-01 7804235 2006-01-01 4445679 2007-01-01 13987075 2008-01-01 27123417 2009-01-01 9722097 2010-01-01 5930489 2011-01-01 7238884 2012-01-01 4516306 2013-01-01 7732708 2014-01-01 10262927 2015-01-01 9959146 2016-01-01 8969295