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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $199,835 | $270,484 | $330,886 | $678,590 | $319,875 | $478,239 | $531,494 |
| Decolourising earths & fuller's earth | $2,923 | | $3,503 | | | | |
| Fire-clay | $6,311 | $11 | $58 | | $1,012 | $18,885 | |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $433,645 | $605,775 | $977,500 | $2,312,731 | $4,571,736 | $387,726 | $319,850 |
| Andalusite, kyanite & sillimanite | | | | $20 | $90,680 | $3,908,805 | $5,979,457 |
| Mullite | | | | | | $221 | $1,273 |
| Chamotte/dinas earths | | $116 | | | $39 | | |
| Total | $642,714 | $876,386 | $1,311,947 | $2,991,341 | $4,983,342 | $4,793,876 | $6,832,074 |
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