Year Dollars 2002-01-01 375264 2007-01-01 206483 2008-01-01 557236 2009-01-01 189150 2010-01-01 321577 2011-01-01 156830 2012-01-01 158168 2013-01-01 310613 2014-01-01 185136 2015-01-01 192725 2016-01-01 600895