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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium metasilicates | $59 | | | $1,000 | $4,230 | $321 |
| Silicates of sodium other than sodiummetasilicates | $100,870 | $106,059 | $68,155 | $29,961 | $28,157 | $57,071 |
| Potsssium silicates | $69,388 | $12,652 | | | | |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | $8,350 | $43,680 | $50,227 | $17,580 | $17,893 | $31,651 |
| Total | $178,667 | $162,391 | $118,382 | $48,541 | $50,280 | $89,043 |
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