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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Carbon electrodes, of a kind used for furnaces | | $264 | $5,603 | $27,270 | | $8,853 |
| Carbon electrodes, other than of a kind used for furnaces | $80 | $976 | $3,456 | $376 | $2,078 | $4,488 |
| Carbon brushes | $9,321 | $8,946 | $12,619 | $15,410 | $15,112 | $12,794 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $1,676 | $373 | $513 | $3,683 | $371 | $3,171 |
| Total | $11,077 | $10,559 | $22,191 | $46,739 | $17,561 | $29,306 |
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