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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon electrodes, of a kind used for furnaces | | | | $36,881 | $452,717 | $72,096 | $1,078 |
| Carbon electrodes, other than of a kind used for furnaces | $156,895 | $311,200 | $332,112 | $389,362 | $139,251 | $163,518 | $391,186 |
| Carbon brushes | $4,464,980 | $6,160,370 | $6,332,003 | $7,684,789 | $4,038,164 | $4,272,924 | $4,647,953 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $1,460,280 | $1,713,043 | $2,872,260 | $4,244,196 | $1,829,039 | $2,610,512 | $4,282,938 |
| Total | $6,082,155 | $8,184,613 | $9,536,375 | $12,355,228 | $6,459,171 | $7,119,050 | $9,323,155 |
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