Year Dollars 1997-01-01 862312 2002-01-01 7117144 2003-01-01 7085638 2004-01-01 1948988 2005-01-01 4459979 2006-01-01 7612430 2007-01-01 5042635 2008-01-01 14344089 2009-01-01 25269764 2010-01-01 22990324 2011-01-01 14537874 2012-01-01 12230119 2013-01-01 17788330 2014-01-01 15025540 2015-01-01 4767637 2016-01-01 7389535