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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium metasilicates | $2,089 | | $510 | | | $105 | $850 |
| Silicates of sodium other than sodiummetasilicates | | $10,933 | | $1,109 | $839 | $3,491 | $517 |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | | | $780 | $338 | $88 | $428 | $482 |
| Total | $2,089 | $10,933 | $1,290 | $1,447 | $927 | $4,024 | $1,849 |
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