Year Dollars 2002-01-01 54536 2005-01-01 176257 2006-01-01 204319 2007-01-01 322358 2008-01-01 606158 2009-01-01 585421 2010-01-01 175545 2011-01-01 1364709 2012-01-01 3270015 2013-01-01 1999618 2014-01-01 526211 2015-01-01 507340 2016-01-01 429688