Year Dollars 2004-01-01 70673 2005-01-01 40680 2008-01-01 821594 2009-01-01 1073921 2010-01-01 4866868 2011-01-01 7510037 2012-01-01 9183815 2013-01-01 12034954 2014-01-01 11925723 2015-01-01 11153331 2016-01-01 7201234