Year Dollars 1992-01-01 6534028 1997-01-01 6000895 2002-01-01 2063712 2003-01-01 2615381 2004-01-01 4047642 2006-01-01 6016686 2007-01-01 6399720 2008-01-01 5503896 2009-01-01 2553377 2010-01-01 1456750 2011-01-01 2891049 2012-01-01 1257623 2013-01-01 1448870 2014-01-01 1990680 2015-01-01 1281124 2016-01-01 2020919