Year Dollars 1992-01-01 722500 1997-01-01 3993931 2002-01-01 3260954 2003-01-01 4832235 2004-01-01 4837650 2005-01-01 5038963 2006-01-01 5623789 2007-01-01 6280598 2008-01-01 8325744 2009-01-01 7864235 2010-01-01 11875696 2011-01-01 12468263 2012-01-01 13650464 2013-01-01 16461653 2014-01-01 16336100 2015-01-01 13397506 2016-01-01 9292383