Year Dollars 1997-01-01 2355776 2002-01-01 385250 2005-01-01 1231081 2006-01-01 6198655 2007-01-01 541680 2008-01-01 1023588 2009-01-01 142901 2010-01-01 921052 2011-01-01 397101 2012-01-01 676438 2013-01-01 791072 2014-01-01 487537 2015-01-01 388273 2016-01-01 833922