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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Carbon electrodes, of a kind used for furnaces | | $6,212 | $2,372 | $19,662 | $431 | $18,175 |
| Carbon electrodes, other than of a kind used for furnaces | $5,313 | $160 | $7,185 | $88,636 | $2,318 | $29,621 |
| Carbon brushes | $1,431 | $1,458 | $3,178 | $1,484 | $8,114 | $6,697 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $4,242 | $1,691 | $65,200 | $2,391 | $18,246 | $8,515 |
| Total | $10,986 | $9,521 | $77,935 | $112,173 | $29,109 | $63,008 |
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