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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Natural graphite, in powder/flakes | $37,339 | $18,790 | $10,885 | $134 | $81 | $132 | $310 |
| Natural graphite other than in powders/flakes | $17,721 | $9,965 | $48,478 | $31,538 | $916 | $15,977 | $26,728 |
| Total | $55,060 | $28,755 | $59,363 | $31,672 | $997 | $16,109 | $27,038 |
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