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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon electrodes, of a kind used for furnaces | | | | | | $141 | $1,107 |
| Carbon electrodes, other than of a kind used for furnaces | $7,398 | $4,581 | $5,127 | $7,605 | $8,980 | $339 | $3,913 |
| Carbon brushes | $11,317 | $12,131 | $16,676 | $23,560 | $28,588 | $26,007 | $30,979 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $2,401 | $21,896 | $3,639 | $18,969 | $12,669 | $4,482 | $8,275 |
| Total | $21,116 | $38,608 | $25,442 | $50,134 | $50,237 | $30,969 | $44,274 |
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