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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $3,556,000 | $2,989,000 | $3,079,000 | $2,791,000 | $2,574,000 | $3,101,499 | $2,765,182 |
| Zinc sulphide | $137,000 | $230,000 | | | | | |
| Cadmium sulphide | $107,000 | $129,000 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $5,527,000 | $7,008,000 | $10,678,000 | $10,365,000 | $6,502,000 | $8,198,237 | $17,091,024 |
| Total | $9,327,000 | $10,356,000 | $13,757,000 | $13,156,000 | $9,076,000 | $11,299,736 | $19,856,206 |
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