Year Dollars 1992-01-01 66559281 1997-01-01 185460567 2002-01-01 116035457 2003-01-01 137989165 2004-01-01 129787204 2005-01-01 142390063 2006-01-01 228767598 2007-01-01 428219310 2008-01-01 470578253 2009-01-01 358975353 2010-01-01 345750446 2011-01-01 461775724 2012-01-01 527203022 2013-01-01 436161912 2014-01-01 859425229 2015-01-01 717642212 2016-01-01 569232606