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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $2,110,314 | $2,828,925 | $3,319,444 | $3,684,792 | $3,113,316 | $3,729,993 | $4,161,225 |
| Decolourising earths & fuller's earth | $221,374 | $232,573 | | | | | |
| Fire-clay | $95,521 | $70,598 | $132,491 | $101,251 | $316,011 | $76,598 | $91,462 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $2,183,121 | $1,044,586 | $1,002,464 | $1,648,537 | $1,193,227 | $1,137,283 | $1,325,862 |
| Andalusite, kyanite & sillimanite | $678,488 | $665,403 | $1,153,463 | $1,054,244 | $1,690,087 | $1,349,306 | $1,391,817 |
| Chamotte/dinas earths | $22,222 | $15,537 | $20,649 | $31,189 | $8,829 | | $6,811 |
| Total | $5,311,040 | $4,857,622 | $5,628,511 | $6,520,013 | $6,321,470 | $6,293,180 | $6,977,177 |
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