Year Dollars 1997-01-01 74313 2002-01-01 135540 2003-01-01 563297 2004-01-01 294818 2005-01-01 716655 2006-01-01 2755950 2007-01-01 704321 2008-01-01 1067560 2009-01-01 2611167 2010-01-01 7530612 2011-01-01 5038391 2012-01-01 3208021 2013-01-01 2195268 2014-01-01 3259183 2015-01-01 3447406 2016-01-01 2465421