Year Dollars 1992-01-01 650884 1997-01-01 1567887 2002-01-01 3293006 2003-01-01 2355974 2004-01-01 3199249 2005-01-01 9404419 2006-01-01 6989382 2007-01-01 8048534 2008-01-01 25769743 2009-01-01 16741676