Commodity20052006200720082010
Cathodes & sections of cathodes, of ref. copper, unwrought $3,229 $11,360 
Unwrought prods. of ref. copper (excl. of 7403.11-7403.13)  $177$6,324 
Copper-zinc base alloys (brass), unwrought$21$613   
Copper-tin base alloys (bronze), unwrought$1,996$362  $174
Total$2,017$4,204$177$17,684$174