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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $551,781 | $671,064 | $737,999 | $1,104,690 | $859,889 | $1,184,286 | $1,251,603 |
| Decolourising earths & fuller's earth | $15,551 | $5,432 | | | | | |
| Fire-clay | $141,086 | $157,349 | $748,814 | $100,653 | $14,947 | $36,173 | $55,476 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $298,318 | $622,298 | $766,150 | $891,685 | $932,886 | $1,125,065 | $1,228,392 |
| Chamotte/dinas earths | $53,981 | $30,852 | $43,828 | $27,543 | $8,953 | $7,821 | $5,523 |
| Total | $1,060,717 | $1,486,995 | $2,296,791 | $2,124,571 | $1,816,675 | $2,353,345 | $2,540,994 |
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