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| Commodity | 2005 | 2006 | 2007 |
| Disodium sulphate | $8,543,843 | $10,177,606 | $14,915,088 |
| Sodium sulphates other than disodium sulphate | $2,261,256 | $2,255,859 | $1,754,019 |
| Sulphates of magnesium | $815,255 | $1,743,085 | $2,802,290 |
| Sulphates of aluminium | $157,034 | $900,823 | $656,194 |
| Sulphates of chromium | $3,220,944 | $3,138,962 | $2,143,525 |
| Sulphates of nickel | $252,542 | $120,312 | $333,000 |
| Sulphates of copper | $77,495 | $90,215 | $27,881 |
| Sulphates of zinc | $1,580,806 | $846,979 | $1,103,233 |
| Sulphates of barium | $358,315 | $82,157 | $101,652 |
| Sulphates (excl. of 2833.21-2833.27) | $565,960 | $1,108,699 | $5,005,635 |
| Alums | $132,504 | $270,312 | $209,146 |
| Peroxosulphates (persulphates) | $21,524 | $23,184 | $27,510 |
| Total | $17,987,478 | $20,758,193 | $29,079,173 |
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