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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon electrodes, of a kind used for furnaces | $1,395 | $1,056 | $4,862 | $12,091 | $12,733 | $14,070 | $29,997 |
| Carbon electrodes, other than of a kind used for furnaces | $26 | $1,884 | $4,559 | $990 | $1,359 | $85,715 | $20,784 |
| Carbon brushes | $10,933 | $7,915 | $18,763 | $26,176 | $96,736 | $96,662 | $8,238 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $28,548 | $29,203 | $105,558 | $1,194 | $58,289 | $26,469 | $1,470 |
| Total | $40,902 | $40,058 | $133,742 | $40,451 | $169,117 | $222,916 | $60,489 |
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