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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $172,077 | $56,536 | $73,242 | $92,340 | $128,368 | $149,637 | $161,935 |
| Decolourising earths & fuller's earth | $2,921 | $3,607 | | | | | |
| Fire-clay | $190,838 | $324,782 | $524,966 | $547,546 | $5,907 | $29,328 | $10,074 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $36,003 | $73,639 | $105,014 | $155,515 | $112,312 | $162,904 | $163,469 |
| Chamotte/dinas earths | $1,718 | $10,211 | $2,498 | $14,855 | $4,731 | $2,496 | $7,306 |
| Total | $403,557 | $468,775 | $705,720 | $810,256 | $251,318 | $344,365 | $342,784 |
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