|
| Commodity | 2005 | 2007 | 2008 | 2011 |
| Sodium sulphates other than disodium sulphate | $6,980 | | | |
| Sulphates of magnesium | | | | $7 |
| Sulphates of aluminium | | | | $1,603 |
| Sulphates of zinc | | $2,782 | | |
| Sulphates (excl. of 2833.21-2833.27) | | $2,177 | $4,659 | $2,845 |
| Total | $6,980 | $4,959 | $4,659 | $4,455 |
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