Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$4,935,047$5,972,082$7,420,035$9,676,430$6,591,733$5,834,702$7,056,916
Total$4,935,047$5,972,082$7,420,035$9,676,430$6,591,733$5,834,702$7,056,916