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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $368,348 | $79,764 | $32,767 | $17,486 | $32,595 | $48,491 | $95,359 |
| Decolourising earths & fuller's earth | | $8,067 | | | | | |
| Fire-clay | $111 | $3,277 | $4,376 | $5,103 | $941 | $3,227 | $3,832 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $5,199 | $15,807 | $75,483 | $64,796 | $26,538 | $237 | $70,214 |
| Chamotte/dinas earths | $126,002 | $98,047 | | $242 | | $18 | |
| Total | $499,660 | $204,962 | $112,626 | $87,627 | $60,074 | $51,973 | $169,405 |
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