Year Dollars 1992-01-01 660162 1997-01-01 2233058 2002-01-01 5033825 2003-01-01 3786227 2004-01-01 7141014 2005-01-01 5701092 2006-01-01 6600297 2007-01-01 6365545 2008-01-01 6181167 2009-01-01 6953658 2010-01-01 12453091 2011-01-01 15345482 2012-01-01 12590478 2013-01-01 8342767 2014-01-01 9874944 2015-01-01 19642872 2016-01-01 12347152