Commodity2005200620072008200920102011
Multiple-walled insulating units of glass$3,679,490$5,258,432$7,705,304$3,877,770$1,515,972$1,315,445$2,140,285
Total$3,679,490$5,258,432$7,705,304$3,877,770$1,515,972$1,315,445$2,140,285