Year Dollars 1997-01-01 219447 2002-01-01 110767 2003-01-01 175703 2004-01-01 63529 2005-01-01 359601 2006-01-01 184087 2007-01-01 76697 2008-01-01 1766446 2009-01-01 720232 2010-01-01 2868259 2011-01-01 3246558 2012-01-01 254335 2013-01-01 1268732 2014-01-01 587854 2015-01-01 1041027 2016-01-01 387449