Year Dollars 1992-01-01 3653515 1997-01-01 4212422 2002-01-01 9127793 2003-01-01 5036715 2004-01-01 5935190 2005-01-01 5115385 2006-01-01 16484143 2007-01-01 10251854 2008-01-01 16166974 2009-01-01 8631467 2010-01-01 10570151 2011-01-01 9348370 2012-01-01 10531216 2013-01-01 9771813 2014-01-01 7123037 2015-01-01 6249757 2016-01-01 11928460