Year Dollars 1992-01-01 3345990 1997-01-01 3696748 2002-01-01 3782266 2003-01-01 4488269 2004-01-01 5105063 2005-01-01 6531462 2006-01-01 4294576 2007-01-01 9170329 2008-01-01 8214465 2009-01-01 7213311 2010-01-01 13640901 2011-01-01 19267426 2012-01-01 29287332 2014-01-01 115145938 2015-01-01 26117089 2016-01-01 28105134