Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$1,293,109$1,432,642$1,059,947$786,337$684,216$1,449,269$2,333,800
Total$1,293,109$1,432,642$1,059,947$786,337$684,216$1,449,269$2,333,800