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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Carbides, of calcium, whether or not chemically defined | $302,150 | $294,860 | $427,180 | $434,023 | $545,309 |
| Carbides, of silicon, whether or not chemically defined | | $50,963 | | | $21,124 |
| Carbides other than of carbon/silicon, whether or not chemically defined | $16,142 | $3,541 | | $3,216 | $8,908 |
| Total | $318,292 | $349,364 | $427,180 | $437,239 | $575,341 |
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