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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $288 | $1,302 | $7,986 | $331,066 | $96,375 | $1,719 | $698 |
| Decolourising earths & fuller's earth | $15 | $1,483 | $822 | | | | |
| Fire-clay | $7,060 | $114 | $1,355 | $7,384 | $17,460 | $10,256 | $1,333 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $37,263 | $31,159 | $44,404 | $25,543 | $54,426 | $54,099 | $33,121 |
| Chamotte/dinas earths | $38,094 | | $16 | $464 | $215 | $4,360 | $704 |
| Total | $82,720 | $34,058 | $54,583 | $364,457 | $168,476 | $70,434 | $35,856 |
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