Year Dollars 2002-01-01 20528 2003-01-01 43030 2004-01-01 61053 2006-01-01 129836 2007-01-01 390032 2008-01-01 164631 2009-01-01 349494 2010-01-01 580989 2011-01-01 532606 2012-01-01 707263 2013-01-01 1943499 2014-01-01 3751854 2016-01-01 273767