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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $4,120,000 | $4,577,000 | $5,251,000 | $9,560,000 | $7,035,000 | $7,825,548 | $8,418,513 |
| Zinc sulphide | $16,717,000 | $19,123,000 | | | | | |
| Cadmium sulphide | $106,000 | $62,000 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $1,589,000 | $1,463,000 | $26,516,000 | $31,166,000 | $29,790,000 | $36,102,728 | $43,118,788 |
| Total | $22,532,000 | $25,225,000 | $31,767,000 | $40,726,000 | $36,825,000 | $43,928,276 | $51,537,301 |
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