Year Dollars 1992-01-01 665741 1997-01-01 425888 2002-01-01 854906 2003-01-01 2308134 2004-01-01 1379308 2005-01-01 1135307 2006-01-01 1583017 2007-01-01 3860894 2008-01-01 5412725 2009-01-01 3302941 2010-01-01 6075625 2011-01-01 7006134 2012-01-01 12166289 2013-01-01 9820227 2014-01-01 18818558 2015-01-01 4171472 2016-01-01 3539459