Year Dollars 1997-01-01 149641 2002-01-01 595765 2005-01-01 269533 2007-01-01 648175 2008-01-01 663595 2009-01-01 687508 2010-01-01 214122 2011-01-01 265111 2012-01-01 314179 2013-01-01 548506 2014-01-01 771401 2015-01-01 344291 2016-01-01 587024