Year Dollars 1997-01-01 394146 2002-01-01 185789 2003-01-01 151963 2004-01-01 333570 2005-01-01 1472051 2006-01-01 2865758 2007-01-01 532694 2008-01-01 300720 2009-01-01 219325 2010-01-01 665188 2011-01-01 371213 2012-01-01 272466 2013-01-01 145717 2014-01-01 336687 2015-01-01 89794 2016-01-01 528794