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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $213,250 | $127,925 | $46,963 | $150,383 | $46,665 | $364,924 | $501,819 |
| Decolourising earths & fuller's earth | $37 | $274 | $26 | | | | |
| Fire-clay | $24,900 | $6,725 | $10,809 | $56,452 | $9,866 | $732 | $7,048 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $79,854 | $72,424 | $35,749 | $12,098 | $15,894 | $8,970 | $29,905 |
| Andalusite, kyanite & sillimanite | $656 | | | | | | |
| Mullite | | | | | | | $6,720 |
| Chamotte/dinas earths | $27,357 | $593 | $8,519 | $25,888 | $57,510 | $10,267 | $9,249 |
| Total | $346,054 | $207,941 | $102,066 | $244,821 | $129,935 | $384,893 | $554,741 |
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