Year Dollars 1992-01-01 4211830 1997-01-01 7921204 2002-01-01 4390662 2003-01-01 3558088 2004-01-01 3277867 2005-01-01 6462350 2006-01-01 5868578 2007-01-01 32748342 2008-01-01 59579994 2009-01-01 23517877 2010-01-01 12473886 2011-01-01 10535558 2012-01-01 11150212 2013-01-01 28456546 2014-01-01 19132675 2015-01-01 19725277 2016-01-01 13798667