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| Commodity | 2005 | 2006 | 2007 |
| Sodium metasilicates | $83,586 | $43,038 | $74,577 |
| Silicates of sodium other than sodiummetasilicates | $131,304 | $148,987 | $100,847 |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | $35,738 | $14,127 | $864 |
| Total | $250,628 | $206,152 | $176,288 |
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