Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$74,906$378,489$1,461,216$3,949,321$1,860,529$3,936,932$2,355,671
Total$74,906$378,489$1,461,216$3,949,321$1,860,529$3,936,932$2,355,671