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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Natural graphite, in powder/flakes | $24,298 | $198,891 | $524,430 | $83,040 | $205,168 | $621,935 | $203,447 |
| Natural graphite other than in powders/flakes | $196,072 | $137,144 | $400,007 | $379,136 | $349,341 | $163,409 | $255,149 |
| Total | $220,370 | $336,035 | $924,437 | $462,176 | $554,509 | $785,344 | $458,596 |
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