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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $8,801,030 | $7,239,104 | $15,325,050 | $14,116,223 | $15,862,328 | $8,716,848 | $16,058,763 |
| Zinc sulphide | | $804 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $205,424 | $149,827 | $129,287 | $383,660 | $19,200 | $6,565 | $5,000 |
| Total | $9,006,454 | $7,389,735 | $15,454,337 | $14,499,883 | $15,881,528 | $8,723,413 | $16,063,763 |
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