Year Dollars 1992-01-01 144247049 1997-01-01 240346100 2002-01-01 282476306 2003-01-01 252947006 2004-01-01 289901739 2005-01-01 306932326 2006-01-01 301381521 2007-01-01 291825767 2008-01-01 335356013 2009-01-01 288054574 2010-01-01 301200172 2011-01-01 300253985 2012-01-01 345857843 2013-01-01 315364194 2014-01-01 353993628 2015-01-01 358100099 2016-01-01 296274032