Year Dollars 2004-01-01 495865 2005-01-01 1601143 2006-01-01 1153941 2009-01-01 961488 2010-01-01 3596663 2011-01-01 9908212 2012-01-01 4383855 2013-01-01 7200624 2014-01-01 9459435 2015-01-01 5970848