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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $2,229,224 | $4,293,563 | $4,458,883 | $5,216,606 | $6,021,240 | $7,687,313 | $9,368,655 |
| Zinc sulphide | $5,407,727 | $6,012,176 | | | | | |
| Cadmium sulphide | $78,692 | $366,032 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $9,952,085 | $9,159,427 | $14,510,542 | $14,343,090 | $9,305,422 | $14,738,614 | $17,352,123 |
| Total | $17,667,728 | $19,831,198 | $18,969,425 | $19,559,696 | $15,326,662 | $22,425,927 | $26,720,778 |
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