Year Dollars 2004-01-01 39074 2007-01-01 141818 2008-01-01 221870 2009-01-01 661748 2011-01-01 2484983 2012-01-01 454826 2013-01-01 180911 2014-01-01 2232616 2015-01-01 122551 2016-01-01 276117