Year Dollars 1992-01-01 72955057 1997-01-01 50937866 2002-01-01 54270992 2003-01-01 23074810 2004-01-01 158172290 2007-01-01 212508420 2008-01-01 129291595 2010-01-01 92419674 2011-01-01 167286366