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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon brushes | $21,447 | $32,510 | $51,569 | $81,280 | $34,125 | $59,214 | $70,735 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $221 | $189 | $882 | $93 | | $136 | $41,071 |
| Total | $21,668 | $32,699 | $52,451 | $81,373 | $34,125 | $59,350 | $111,806 |
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