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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Sodium metasilicates | $6,077 | $13,006 | $26,058 | $15,992 | $14,397 | $5,381 |
| Silicates of sodium other than sodiummetasilicates | $12,365 | | $14,674 | $8,797 | $63,691 | $49,077 |
| Potsssium silicates | | $13,610 | | | | |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | $1,180 | $14,579 | $7,005 | $3,970 | $9,203 | $7,836 |
| Total | $19,622 | $41,195 | $47,737 | $28,759 | $87,291 | $62,294 |
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