Year Dollars 1992-01-01 1829193 1997-01-01 6522415 2002-01-01 5972779 2003-01-01 3367913 2004-01-01 8767796 2005-01-01 4592438 2006-01-01 6513890 2007-01-01 5089002 2008-01-01 12918557 2009-01-01 5244525 2010-01-01 6210127 2011-01-01 9115481 2012-01-01 5467415 2013-01-01 6533418 2014-01-01 5616381 2015-01-01 7276900 2016-01-01 5766725