Year Dollars 1992-01-01 20670546 1997-01-01 43552896 2002-01-01 126031556 2003-01-01 168523936 2004-01-01 216911147 2005-01-01 197866951 2006-01-01 197897695 2007-01-01 159820329 2008-01-01 215046296 2009-01-01 152513815 2010-01-01 199011736 2011-01-01 215128539 2012-01-01 218339346 2013-01-01 209138244 2014-01-01 197470446 2015-01-01 128582342 2016-01-01 111760221