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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Zinc dust | $8,079,878 | $24,117,834 | $28,873,350 | $20,802,624 | $9,345,226 | $15,567,802 | $18,310,917 |
| Zinc powders & flakes | $21,962,550 | $45,603,912 | $58,736,792 | $29,113,240 | $8,813,288 | $16,022,521 | $13,018,546 |
| Total | $30,042,428 | $69,721,746 | $87,610,142 | $49,915,864 | $18,158,514 | $31,590,323 | $31,329,463 |
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