Year Dollars 1992-01-01 424268 1997-01-01 285561 2002-01-01 1643813 2003-01-01 2665058 2004-01-01 5972614 2005-01-01 5801679 2006-01-01 18847602 2007-01-01 7057580 2008-01-01 13106053 2009-01-01 6795248 2010-01-01 7905851 2011-01-01 12363026 2012-01-01 9045832 2013-01-01 11450565 2014-01-01 13864850 2015-01-01 8726730 2016-01-01 8983944