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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $29,114,176 | $34,892,996 | $33,623,951 | $44,292,060 | $29,135,806 | $19,990,931 | $26,703,436 |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $407,939 | $517,443 | $507,663 | $2,367,176 | $458,670 | $1,049,372 | $438,822 |
| Total | $29,522,115 | $35,410,439 | $34,131,614 | $46,659,236 | $29,594,476 | $21,040,303 | $27,142,258 |
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