Year Dollars 1992-01-01 186432812 1997-01-01 191712669 2002-01-01 222576430 2003-01-01 239709285 2004-01-01 216767692 2005-01-01 250945560 2006-01-01 319176514 2007-01-01 317114648 2008-01-01 251596748 2009-01-01 191189579 2010-01-01 305109852 2011-01-01 298821561 2012-01-01 238479223 2013-01-01 139778732 2014-01-01 106654438 2015-01-01 210543917 2016-01-01 172377355