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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $534,113 | $749,954 | $1,595,318 | $1,646,293 | $1,690,869 | $1,859,941 | $1,876,190 |
| Decolourising earths & fuller's earth | $256,019 | $296,848 | | | | | |
| Fire-clay | $151,883 | $168,503 | $157,304 | $347,568 | $202,244 | $495,316 | $470,230 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $320,447 | $316,705 | $618,357 | $850,569 | $668,361 | $782,005 | $850,542 |
| Andalusite, kyanite & sillimanite | $70,937 | $198,328 | $101,517 | $234,182 | $144,389 | $242,928 | $204,242 |
| Mullite | $188,637 | $111,000 | $201,356 | $88,369 | $92,380 | $57,135 | $289,273 |
| Chamotte/dinas earths | $49,761 | $82,594 | $55,928 | $113,252 | $54,495 | $54,819 | $62,476 |
| Total | $1,571,797 | $1,923,932 | $2,729,780 | $3,280,233 | $2,852,738 | $3,492,144 | $3,752,953 |
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