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| Commodity | 2005 | 2006 | 2007 | 2009 | 2010 | 2011 |
| Carbon electrodes, of a kind used for furnaces | $161 | | | $4,149 | | |
| Carbon electrodes, other than of a kind used for furnaces | $484 | $4,057 | $5,327 | $6,071 | $4,031 | $1,819 |
| Carbon brushes | $8,831 | $16,852 | $20,011 | $5,205 | $6,834 | $3,789 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $1,391 | $541 | $9,961 | $6,265 | $1,801 | $1,092 |
| Total | $10,867 | $21,450 | $35,299 | $21,690 | $12,666 | $6,700 |
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