Year Dollars 2004-01-01 644305 2005-01-01 680581 2006-01-01 1361296 2007-01-01 3926838 2008-01-01 5260404 2009-01-01 1649302 2010-01-01 2450370 2011-01-01 13938251 2012-01-01 15134472 2013-01-01 20658764 2014-01-01 15475959 2015-01-01 10473325 2016-01-01 6926657