Year Dollars 1992-01-01 4642067 1997-01-01 27235917 2002-01-01 60754723 2003-01-01 88765704 2004-01-01 118441462 2005-01-01 122035324 2006-01-01 128194180 2007-01-01 184825706 2008-01-01 226037673 2009-01-01 182801133 2010-01-01 271764336 2011-01-01 305702120 2012-01-01 280570101 2013-01-01 320838160 2014-01-01 300661353 2015-01-01 332785034 2016-01-01 305716285