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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon electrodes, of a kind used for furnaces | $2,407 | | | | | | |
| Carbon electrodes, other than of a kind used for furnaces | $55,963 | $1,180,469 | $632,984 | $331,320 | $558,511 | $2,669,792 | $586,561 |
| Carbon brushes | $18,002,996 | $17,402,510 | $20,660,524 | $18,070,317 | $15,748,713 | $21,050,946 | $22,595,165 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $3,324,240 | $3,032,582 | $1,552,388 | $4,362,443 | $2,818,099 | $3,208,263 | $3,754,247 |
| Total | $21,385,606 | $21,615,561 | $22,845,896 | $22,764,080 | $19,125,323 | $26,929,001 | $26,935,973 |
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