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| Commodity | 2005 | 2006 | 2008 | 2009 | 2010 | 2011 |
| Carbides, of calcium, whether or not chemically defined | | | $76,500 | | | |
| Carbides, of silicon, whether or not chemically defined | $20,192,158 | $18,062,550 | $22,132,872 | $23,274,630 | $26,095,220 | $7,798,684 |
| Carbides other than of carbon/silicon, whether or not chemically defined | | | | | | $1,113 |
| Total | $20,192,158 | $18,062,550 | $22,209,372 | $23,274,630 | $26,095,220 | $7,799,797 |
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