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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $1,898,819 | $3,235,323 | $4,809,978 | $5,809,366 | $6,305,695 | $8,046,382 | $7,145,763 |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | | | | $97 | $2,601 | $107,255 | $1,308,257 |
| Total | $1,898,819 | $3,235,323 | $4,809,978 | $5,809,463 | $6,308,296 | $8,153,637 | $8,454,020 |
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