Year Dollars 1992-01-01 6477666 1997-01-01 4055949 2002-01-01 11916491 2003-01-01 25165847 2004-01-01 45244016 2005-01-01 68523301 2006-01-01 33649471 2007-01-01 55174299 2008-01-01 51915611 2009-01-01 44492737 2010-01-01 33839000 2011-01-01 26168157 2012-01-01 34958845 2013-01-01 48041221 2014-01-01 48777623 2015-01-01 20133173 2016-01-01 19202126