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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Carbon electrodes, of a kind used for furnaces | $32,288 | $176,814 | $507,111 | $1,015,172 | $253,422 | $1,151,897 | $378,695 |
| Carbon electrodes, other than of a kind used for furnaces | $794,332 | $783,714 | $697,556 | $346,911 | $376,979 | $582,212 | $751,685 |
| Carbon brushes | $8,081,448 | $9,600,389 | $13,090,106 | $16,603,528 | $14,400,512 | $17,252,285 | $25,893,117 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | $56,001 | $40,876 | $249,180 | $471,017 | $735,424 | $38,137 | $90,665 |
| Total | $8,964,069 | $10,601,793 | $14,543,953 | $18,436,628 | $15,766,337 | $19,024,531 | $27,114,162 |
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