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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $2,342,591 | $2,429,739 | $2,067,619 | $3,254,672 | $3,077,634 | $4,206,735 | $5,828,563 |
| Decolourising earths & fuller's earth | $35 | $28,092 | $44,957 | | | | |
| Fire-clay | $30,969 | $8,075 | $118,521 | $94,690 | $275,209 | $183,738 | $103,747 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $11,104 | $23,602 | $583,954 | $394,732 | $149,951 | $258,345 | $103,275 |
| Andalusite, kyanite & sillimanite | $175 | $75 | | $15 | | $2,288 | |
| Mullite | $2,272 | $2,186 | $16,593 | | $4,821 | | |
| Chamotte/dinas earths | $231 | | | $1,083 | $28 | $1 | $7,800 |
| Total | $2,387,377 | $2,491,769 | $2,831,644 | $3,745,192 | $3,507,643 | $4,651,107 | $6,043,385 |
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