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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Cobalt & arts. thereof , n.e.s. in 81.05 | $9,069,030 | $8,299,511 | $11,984,013 | $19,142,219 | $13,165,621 | $18,732,232 | $22,744,854 |
| Total | $9,069,030 | $8,299,511 | $11,984,013 | $19,142,219 | $13,165,621 | $18,732,232 | $22,744,854 |
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