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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $27,892 | $1,455 | $109,999 | $290,998 | $101,725 | $56,290 | $25,208 |
| Decolourising earths & fuller's earth | $5,000 | $13,208 | | | | | |
| Fire-clay | $25 | $10 | $8,473 | | | | $211 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $341 | $606 | $1,042 | $667 | $417 | $352 | $1 |
| Chamotte/dinas earths | $549 | $11,280 | $21,414 | $20,569 | $6,813 | $22,666 | $30,253 |
| Total | $33,807 | $26,559 | $140,928 | $312,234 | $108,955 | $79,308 | $55,673 |
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