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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $35,048,723 | $45,595,782 | $72,018,780 | $70,048,238 | $59,826,481 | $81,770,827 | $97,885,114 |
| Zinc sulphide | $2,406,973 | $2,966,675 | | | | | |
| Cadmium sulphide | $94,007 | $83,473 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $15,613,390 | $18,916,274 | $38,913,661 | $9,451,561 | $4,995,409 | $5,299,270 | $5,909,625 |
| Total | $53,163,093 | $67,562,204 | $110,932,441 | $79,499,799 | $64,821,890 | $87,070,097 | $103,794,739 |
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