Year Dollars 1992-01-01 9302124 1997-01-01 141802109 2002-01-01 97421962 2003-01-01 74836519 2004-01-01 81993594 2005-01-01 123648941 2006-01-01 153901980 2007-01-01 121124134 2008-01-01 86731743 2009-01-01 54202038 2010-01-01 32120242 2011-01-01 21987743 2012-01-01 28198327 2013-01-01 21491546 2014-01-01 22208097 2015-01-01 27184789 2016-01-01 36186760