Year Dollars 1992-01-01 902793 1997-01-01 420960 2002-01-01 1667787 2003-01-01 1780754 2004-01-01 2958661 2005-01-01 625248 2006-01-01 1411082 2007-01-01 817720 2008-01-01 6980621 2009-01-01 1339423 2010-01-01 14870535 2011-01-01 18155518 2012-01-01 8074687 2013-01-01 6471763 2014-01-01 35142986 2015-01-01 12330153 2016-01-01 6527039