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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Pitch, obt. from coal tar/oth. min. tars | $5,402,986 | $12,304,179 | $22,334,101 | $14,116,976 | $33,557,658 | $45,482,876 | $16,226,602 |
| Pitch coke, obt. from coal tar/oth. min. tars | $13,994,705 | $685,621 | $2,939 | $16,386,129 | | $10,234,675 | $20,803,351 |
| Total | $19,397,691 | $12,989,800 | $22,337,040 | $30,503,105 | $33,557,658 | $55,717,551 | $37,029,953 |
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