Year Dollars 1997-01-01 3293847 2002-01-01 5033440 2003-01-01 6151174 2004-01-01 5750211 2005-01-01 6092790 2006-01-01 9152454 2007-01-01 9436552 2008-01-01 7131041 2009-01-01 1584865 2010-01-01 983389 2011-01-01 2683869 2012-01-01 4173759 2013-01-01 3686337 2014-01-01 3968602 2015-01-01 4225525 2016-01-01 1931221