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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $11,946,085 | $12,051,652 | $14,463,177 | $15,336,917 | $12,840,320 | $17,534,152 | $23,011,485 |
| Decolourising earths & fuller's earth | $1,049,703 | $1,049,778 | | | | | |
| Fire-clay | $525,131 | $490,853 | $423,524 | $371,040 | $282,137 | $579,581 | $744,575 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,741,914 | $1,594,933 | $3,147,829 | $3,241,148 | $3,813,253 | $4,315,845 | $4,737,667 |
| Andalusite, kyanite & sillimanite | $3,487,044 | $4,199,219 | $3,703,512 | $5,083,013 | $4,313,978 | $6,258,818 | $5,368,857 |
| Mullite | $3,572,093 | $4,047,228 | $3,548,528 | $7,265,088 | $12,731,153 | $16,586,361 | $15,376,448 |
| Chamotte/dinas earths | $1,022,943 | $1,049,394 | $1,681,776 | $1,950,338 | $2,152,440 | $2,424,665 | $1,723,756 |
| Total | $23,344,913 | $24,483,057 | $26,968,346 | $33,247,544 | $36,133,281 | $47,699,422 | $50,962,788 |
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