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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $1,670,098 | $3,235,622 | $4,003,933 | $7,702,557 | $4,591,759 | $7,955,357 | $9,171,040 |
| Zinc sulphide | $512,711 | $424,526 | | | | | |
| Cadmium sulphide | | $275 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $2,082,743 | $2,757,002 | $2,054,153 | $2,041,906 | $2,103,756 | $3,739,735 | $2,773,741 |
| Total | $4,265,552 | $6,417,425 | $6,058,086 | $9,744,463 | $6,695,515 | $11,695,092 | $11,944,781 |
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