Year Dollars 2002-01-01 474756 2003-01-01 471159 2007-01-01 760780 2008-01-01 397154 2009-01-01 975737 2011-01-01 41863 2012-01-01 424303 2013-01-01 76118 2014-01-01 214482 2015-01-01 167036 2016-01-01 157357