Year Dollars 1992-01-01 655706 2006-01-01 3141507 2007-01-01 5709051 2008-01-01 10585725 2009-01-01 3033895 2010-01-01 8977912 2011-01-01 12612884 2012-01-01 22083860 2013-01-01 15709674 2014-01-01 11773462 2015-01-01 5550924 2016-01-01 5082085