Year Dollars 1997-01-01 123261 2003-01-01 257392 2004-01-01 171087 2005-01-01 243709 2006-01-01 524816 2007-01-01 870016 2008-01-01 2173054 2009-01-01 1301493 2010-01-01 1974261 2011-01-01 724618 2012-01-01 578285 2013-01-01 682012 2014-01-01 284962 2015-01-01 146281 2016-01-01 626643