Year Dollars 1992-01-01 115467743 1997-01-01 247211697 2002-01-01 276852503 2003-01-01 268764005 2004-01-01 268060760 2005-01-01 270972467 2006-01-01 368270202 2007-01-01 594526286 2008-01-01 753762568 2009-01-01 577414761 2010-01-01 600035461 2011-01-01 617374969 2012-01-01 556864553 2013-01-01 695458578 2014-01-01 751354639 2015-01-01 729232837 2016-01-01 648735691