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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon (carbon blacks & oth. forms of carbon, n.e.s.) | $25,339,754 | $26,122,284 | $19,135,106 | $16,646,912 | $20,710,456 | $30,412,230 | $36,838,025 |
| Total | $25,339,754 | $26,122,284 | $19,135,106 | $16,646,912 | $20,710,456 | $30,412,230 | $36,838,025 |
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