Year Dollars 1992-01-01 176211590 1997-01-01 317291581 2002-01-01 256041062 2003-01-01 250000349 2004-01-01 323170114 2005-01-01 320797517 2006-01-01 280816421 2007-01-01 322705873 2008-01-01 317064112 2009-01-01 286716814 2010-01-01 437604250 2011-01-01 600947706 2012-01-01 692451301 2013-01-01 800864667 2014-01-01 586227786 2015-01-01 597992379 2016-01-01 501949130