Year Dollars 1992-01-01 2192819 1997-01-01 6463116 2002-01-01 2182329 2003-01-01 38918281 2004-01-01 57840422 2005-01-01 53130227 2006-01-01 25200881 2007-01-01 23280585 2008-01-01 49116146 2009-01-01 18418642 2010-01-01 13324116 2011-01-01 17175697 2012-01-01 21967798 2013-01-01 26786900 2014-01-01 18771348 2015-01-01 14718285 2016-01-01 12287187