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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $25,605 | $10,096 | $4,534 | $9,424 | $6,160 | $17,979 | $13,643 |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $12,150 | $3,176 | | | | $27,096 | $15,102 |
| Total | $37,755 | $13,272 | $4,534 | $9,424 | $6,160 | $45,075 | $28,745 |
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