Year Dollars 1992-01-01 70460083 1997-01-01 138162362 2002-01-01 388726333 2003-01-01 541850093 2004-01-01 679303155 2005-01-01 881702197 2006-01-01 1184590940 2007-01-01 1222252937 2008-01-01 1540289675 2009-01-01 1503824726 2010-01-01 2625140560 2011-01-01 3475264831 2012-01-01 2776119031 2013-01-01 2818650397 2014-01-01 2281653379 2015-01-01 1966730447 2016-01-01 2148014333