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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Carbides, of calcium, whether or not chemically defined | $15,633 | $40,833 | $22,818 | $20,942 | $20,104 |
| Carbides, of silicon, whether or not chemically defined | | | | | $740 |
| Carbides other than of carbon/silicon, whether or not chemically defined | | | | | $625 |
| Total | $15,633 | $40,833 | $22,818 | $20,942 | $21,469 |
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