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| Commodity | 2005 | 2006 | 2007 | 2008 | 2011 |
| Sodium hydroxide (caustic soda), solid | $100 | $18,200 | $20,300 | | $4,500 |
| Sodium hydroxide (caustic soda), in aqueous solution (sida lye/liquid soda) ... | | | | $13,700 | $1,700 |
| Potassium hydroxide (caustic potash) | | | | $700 | $48,000 |
| Total | $100 | $18,200 | $20,300 | $14,400 | $54,200 |
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