Year Dollars 1992-01-01 264797137 1997-01-01 279356851 2002-01-01 320690989 2003-01-01 298809027 2004-01-01 297765524 2005-01-01 342768380 2006-01-01 428204566 2007-01-01 457235932 2008-01-01 561618564 2009-01-01 483173627 2010-01-01 495144218 2011-01-01 576561937 2012-01-01 467139791 2013-01-01 447678437 2014-01-01 490833390 2015-01-01 446057354 2016-01-01 399278933