Year Dollars 1992-01-01 97212620 1997-01-01 152144357 2002-01-01 305732078 2003-01-01 255821663 2004-01-01 297497829 2005-01-01 334144693 2006-01-01 328152154 2007-01-01 397498909 2008-01-01 595282144 2009-01-01 486617053 2010-01-01 398036999 2011-01-01 418751322 2012-01-01 401688209 2013-01-01 381454945 2014-01-01 451435094 2015-01-01 421508319 2016-01-01 347462569