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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium metasilicates | $416 | $596 | $877 | $12,745 | $1,311 | $1,849 | $1,982 |
| Silicates of sodium other than sodiummetasilicates | | $1,295 | $246 | | $3,904 | $27 | $53 |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | $47,432 | $29,278 | $32,869 | $32,092 | $24,122 | $30,456 | $28,118 |
| Total | $47,848 | $31,169 | $33,992 | $44,837 | $29,337 | $32,332 | $30,153 |
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