Year Dollars 2002-01-01 186216 2003-01-01 132726 2006-01-01 833895 2008-01-01 2113056 2009-01-01 1985723 2011-01-01 3769361 2013-01-01 3011151 2014-01-01 1785140 2015-01-01 3991575