Year Dollars 1992-01-01 1274930 1997-01-01 3823554 2002-01-01 7817285 2003-01-01 9123544 2004-01-01 17647199 2005-01-01 12737581 2006-01-01 20182926 2007-01-01 3803005 2008-01-01 2516418 2009-01-01 3112853 2010-01-01 4981984 2011-01-01 6558719 2012-01-01 5522369 2013-01-01 11878673 2014-01-01 14871052 2015-01-01 7047951 2016-01-01 2776025