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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Pitch, obt. from coal tar/oth. min. tars | $155,038 | $752,589 | $2,316,736 | $13,422,116 | $10,850,844 | $19,770,343 | $21,440,288 |
| Pitch coke, obt. from coal tar/oth. min. tars | $363,787 | $4,774,726 | $7,480,793 | $1,431,110 | $486,731 | $13,542 | $5,589,348 |
| Total | $518,825 | $5,527,315 | $9,797,529 | $14,853,226 | $11,337,575 | $19,783,885 | $27,029,636 |
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