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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium metasilicates | $377,000 | $417,000 | $451,000 | $498,000 | $600,000 | $494,000 | $531,000 |
| Silicates of sodium other than sodiummetasilicates | $1,556,000 | $1,691,000 | $1,878,000 | $1,621,000 | $1,518,000 | $1,689,000 | $1,087,000 |
| Potsssium silicates | $65,000 | $67,000 | | | | | |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | $401,000 | $523,000 | $576,000 | $627,000 | $655,000 | $530,000 | $2,638,000 |
| Total | $2,399,000 | $2,698,000 | $2,905,000 | $2,746,000 | $2,773,000 | $2,713,000 | $4,256,000 |
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