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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Carbides, of calcium, whether or not chemically defined | $162,843 | $66,139 | $58,140 | $259,404 | $445,468 |
| Carbides, of silicon, whether or not chemically defined | $100,093 | $65,995 | $163,098 | $439,588 | $96,611 |
| Carbides other than of carbon/silicon, whether or not chemically defined | $14,123 | $20,751 | $20,165 | $22,640 | $12,035 |
| Total | $277,059 | $152,885 | $241,403 | $721,632 | $554,114 |
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