Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$8,200,036$7,591,444$8,924,921$7,253,034$3,105,324$1,754,519$4,340,734
Total$8,200,036$7,591,444$8,924,921$7,253,034$3,105,324$1,754,519$4,340,734