Year Dollars 1992-01-01 22861786 1997-01-01 79271779 2002-01-01 95351430 2003-01-01 95617448 2004-01-01 120376235 2005-01-01 329381959 2006-01-01 144685012 2007-01-01 155405099 2008-01-01 148806658 2009-01-01 240120329 2010-01-01 693292396 2011-01-01 779320609 2012-01-01 937901985 2013-01-01 549649313 2014-01-01 190732449 2015-01-01 547434565 2016-01-01 456384683