Year Dollars 1992-01-01 174313 1997-01-01 193425 2002-01-01 143833 2003-01-01 131261 2004-01-01 87108 2005-01-01 234053 2006-01-01 239982 2007-01-01 414346 2008-01-01 564550 2009-01-01 863402 2010-01-01 4942060 2011-01-01 4058621 2015-01-01 9602742 2016-01-01 5972842