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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Zinc dust | $53,269,086 | $127,921,249 | $128,438,227 | $85,859,514 | $55,827,644 | $89,305,887 | $92,361,643 |
| Zinc powders & flakes | $18,580,167 | $32,801,748 | $47,767,149 | $51,294,439 | $40,940,001 | $44,933,862 | $33,782,850 |
| Total | $71,849,253 | $160,722,997 | $176,205,376 | $137,153,953 | $96,767,645 | $134,239,749 | $126,144,493 |
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