Year Dollars 1992-01-01 3695796364 1997-01-01 7770452928 2002-01-01 7080721810 2003-01-01 7212667981 2004-01-01 7656393580 2005-01-01 8638062352 2006-01-01 10452726147 2007-01-01 11625991227 2008-01-01 12544341729 2009-01-01 10243692610 2010-01-01 12986733261 2011-01-01 17094593332 2012-01-01 17000820190 2013-01-01 17203206414 2014-01-01 17611810978 2015-01-01 13820304059 2016-01-01 12604275727