Year Dollars 2002-01-01 35464266 2003-01-01 23651422 2004-01-01 27684572 2005-01-01 20753053 2006-01-01 17900491 2007-01-01 13958313 2008-01-01 17333079 2009-01-01 12780192 2010-01-01 19784133 2011-01-01 13430118 2012-01-01 19772864 2013-01-01 24903632 2014-01-01 22746392 2015-01-01 22590719 2016-01-01 15785157