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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $711,297 | $886,210 | $1,333,237 | $1,648,189 | $1,552,368 | $2,006,585 | $1,008,389 |
| Decolourising earths & fuller's earth | $43,594 | $226,205 | $337,465 | $360,716 | | | |
| Fire-clay | | $1,830 | $85,024 | $6,469 | | | $2,185 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | | | $29,633 | $91,594 | $56,792 | $54,886 | $535,280 |
| Chamotte/dinas earths | $146,400 | $151,314 | $35,574 | $77,933 | $41,752 | $51,576 | $6,680 |
| Total | $901,291 | $1,265,559 | $1,820,933 | $2,184,901 | $1,650,912 | $2,113,047 | $1,552,534 |
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