Commodity2005200620072008200920102011
Copper waste & scrap$5,581,838$12,642,291$13,684,500$15,456,798$5,793,551$18,920,299$20,394,251
Total$5,581,838$12,642,291$13,684,500$15,456,798$5,793,551$18,920,299$20,394,251