Year Dollars 1992-01-01 271546094 1997-01-01 468800438 2002-01-01 519455522 2003-01-01 537180048 2004-01-01 193432473 2005-01-01 249084284 2006-01-01 344868579 2007-01-01 368695003 2008-01-01 850089600 2009-01-01 619311014 2010-01-01 580859628 2011-01-01 663251091 2012-01-01 739668218 2013-01-01 871287993 2014-01-01 824579382 2015-01-01 674398000 2016-01-01 773238570