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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Natural graphite, in powder/flakes | $9,568 | $1,900 | $19,024 | $6,728 | $2,026 | $6,855 |
| Natural graphite other than in powders/flakes | $1,709 | $3,792 | $1,234 | $5,028 | $15,153 | $15,344 |
| Total | $11,277 | $5,692 | $20,258 | $11,756 | $17,179 | $22,199 |
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