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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Sodium metasilicates | | | | $15,980 | |
| Silicates of sodium other than sodiummetasilicates | $32,755 | $33,909 | $129,569 | $145,188 | $161,678 |
| Potsssium silicates | | $7,820 | | | |
| Silicates other than of sodium/potassium; commercial alkali metal silicates ... | | $1,608 | $65 | $2,910 | $102,882 |
| Total | $32,755 | $43,337 | $129,634 | $164,078 | $264,560 |
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