Year Dollars 1997-01-01 998414 2002-01-01 2357491 2003-01-01 2016243 2004-01-01 8455268 2005-01-01 3684464 2006-01-01 4004467 2007-01-01 10113399 2008-01-01 15560615 2009-01-01 9364694 2010-01-01 11874983 2011-01-01 15858912 2012-01-01 14454538 2013-01-01 9783483 2014-01-01 7388014 2015-01-01 5082952 2016-01-01 6923254