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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbides, of calcium, whether or not chemically defined | $26,218 | $1,161 | $1,542 | $36,586 | $4,361 | $6,203 | $23,127 |
| Carbides, of silicon, whether or not chemically defined | $1,543 | $4,194 | $16,301 | $55,906 | | $11,251 | $784 |
| Carbides other than of carbon/silicon, whether or not chemically defined | $4,026 | $13,032 | $631,240 | $84,155 | $81,887 | $120,485 | $123,605 |
| Total | $31,787 | $18,387 | $649,083 | $176,647 | $86,248 | $137,939 | $147,516 |
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