Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$5,680,762$6,976,300$9,725,572$7,765,107$5,738,846$8,070,802$9,227,780
Total$5,680,762$6,976,300$9,725,572$7,765,107$5,738,846$8,070,802$9,227,780