|
| Commodity | 2005 | 2006 | 2007 | 2008 |
| Carbides, of calcium, whether or not chemically defined | | $28,841 | | $119 |
| Carbides, of silicon, whether or not chemically defined | | | $914 | |
| Carbides other than of carbon/silicon, whether or not chemically defined | $4,850 | $53,108 | $124,482 | $130,392 |
| Total | $4,850 | $81,949 | $125,396 | $130,511 |
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