Year Dollars 1997-01-01 479109 2002-01-01 619979 2003-01-01 671577 2004-01-01 1210542 2005-01-01 1218334 2006-01-01 722370 2007-01-01 1082342 2008-01-01 2095004 2009-01-01 936562 2010-01-01 835783 2011-01-01 1490292 2012-01-01 1653329 2013-01-01 4073222 2014-01-01 7676349 2015-01-01 6883336 2016-01-01 6053024