Year Dollars 1997-01-01 104533 2002-01-01 231407 2003-01-01 354427 2004-01-01 1287074 2005-01-01 1287056 2006-01-01 2295893 2007-01-01 1182125 2008-01-01 8772778 2009-01-01 10069232 2010-01-01 11049034 2011-01-01 6695924 2012-01-01 18336828 2013-01-01 27026495 2014-01-01 16772420 2015-01-01 18092037 2016-01-01 19262691