Year Dollars 2002-01-01 211848 2003-01-01 501409 2004-01-01 527646 2005-01-01 833615 2006-01-01 1116586 2007-01-01 2005243 2008-01-01 3204898 2010-01-01 3773848 2011-01-01 2600275 2012-01-01 8418526 2013-01-01 5698379 2015-01-01 2484723 2016-01-01 1535101