Year Dollars 1992-01-01 4137115 1997-01-01 1410812 2002-01-01 7071394 2003-01-01 1743747 2004-01-01 2442222 2005-01-01 3706048 2006-01-01 2516785 2007-01-01 2440386 2008-01-01 4858243 2009-01-01 6828670 2010-01-01 15904129 2011-01-01 6349919 2012-01-01 6078494 2013-01-01 5371518 2014-01-01 13747314 2015-01-01 7710642 2016-01-01 2276521