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| Commodity | 2005 | 2006 | 2007 | 2010 |
| Carbon electrodes, of a kind used for furnaces | $4,589,858 | $1,945,261 | $9,206,970 | $15,643,486 |
| Carbon electrodes, other than of a kind used for furnaces | $1,980,020 | $4,850,793 | $4,008,370 | $1,316,002 |
| Carbon brushes | $969,341 | $1,423,631 | $1,605,668 | $2,312,803 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $15,891,991 | $18,121,318 | $20,770,403 | $44,630,189 |
| Total | $23,431,210 | $26,341,003 | $35,591,411 | $63,902,480 |
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