Year Dollars 1992-01-01 1175135 2002-01-01 31709171 2004-01-01 64441068 2005-01-01 74687899 2006-01-01 31866045 2007-01-01 25560670 2008-01-01 26741442 2009-01-01 12531226 2010-01-01 11966800 2011-01-01 14152206 2012-01-01 17874507 2013-01-01 64294308 2014-01-01 100873572 2015-01-01 51686693 2016-01-01 29339090