Year Dollars 1992-01-01 22283554 1997-01-01 15010216 2002-01-01 23239778 2003-01-01 34730511 2004-01-01 38874754 2005-01-01 44876216 2006-01-01 64570868 2007-01-01 58031117 2008-01-01 99369246 2009-01-01 66954121 2010-01-01 53774931 2011-01-01 70696125 2012-01-01 67243634 2013-01-01 72199613 2014-01-01 59865563 2015-01-01 51341768 2016-01-01 54100549