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| Commodity | 2005 | 2007 | 2010 | 2011 |
| Carbides, of calcium, whether or not chemically defined | $58,836 | $46,212 | $133,862 | $151,020 |
| Carbides, of silicon, whether or not chemically defined | | | $5,256 | |
| Carbides other than of carbon/silicon, whether or not chemically defined | $5,242 | $47,715 | $30,607 | $31,551 |
| Total | $64,078 | $93,927 | $169,725 | $182,571 |
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