Year Dollars 1992-01-01 1856521386 1997-01-01 2063334208 2002-01-01 1748069052 2003-01-01 1751719007 2004-01-01 2733051419 2005-01-01 2532028950 2006-01-01 2294138708 2007-01-01 2582743132 2008-01-01 2539661901 2009-01-01 2234527622 2010-01-01 2268751037 2011-01-01 2238588846 2012-01-01 2560276956 2013-01-01 2523072938 2014-01-01 2601895394 2015-01-01 2579404741