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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $15,598 | $16,461 | $17,452 | $24,702 | $33,925 | $9,070 | $21,112 |
| Decolourising earths & fuller's earth | $2,410 | | $39 | | | | |
| Fire-clay | $1,049 | $5,144 | $3,465 | $914 | $320 | $3,857 | $2,896 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $25,558 | $17,209 | $34,311 | $39,374 | $22,734 | $29,370 | $32,280 |
| Chamotte/dinas earths | $3,911 | $6,686 | $138 | $3,465 | $5,090 | | |
| Total | $48,526 | $45,500 | $55,405 | $68,455 | $62,069 | $42,297 | $56,288 |
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