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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $12,185 | $5,029 | $7,734 | $3,481 | $5,969 | $32,425 | $28,195 |
| Decolourising earths & fuller's earth | | $134 | $1,174 | | | | |
| Fire-clay | | $6,115 | $6,039 | $10,280 | $28,987 | $285 | |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $10 | $68 | $55 | | $90,416 | $2,541 | $743 |
| Chamotte/dinas earths | | | | $2,653 | $636 | $11,260 | $9,665 |
| Total | $12,195 | $11,346 | $15,002 | $16,414 | $126,008 | $46,511 | $38,603 |
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