Year Dollars 1997-01-01 2782854 2002-01-01 775221 2003-01-01 1786013 2004-01-01 6931903 2005-01-01 2395313 2006-01-01 2505418 2007-01-01 6708892 2008-01-01 8038636 2009-01-01 3778945 2010-01-01 4541097 2012-01-01 4612768 2013-01-01 7074614 2014-01-01 11966001 2015-01-01 6414037 2016-01-01 10878202