Year Dollars 1997-01-01 943588 2002-01-01 850484 2003-01-01 588958 2004-01-01 419799 2005-01-01 844108 2006-01-01 3254595 2007-01-01 6169825 2008-01-01 5195036 2009-01-01 3707210 2010-01-01 5413093 2012-01-01 8089763 2013-01-01 7881542 2014-01-01 5416873 2015-01-01 3733510 2016-01-01 17930199