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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Sodium sulphides | | $30,049 | $123,926 | $219,086 | $147,046 |
| Zinc sulphide | $7,495 | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | | $6,631 | $88,605 | $209,369 | $21,285 |
| Total | $7,495 | $36,680 | $212,531 | $428,455 | $168,331 |
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