|
| Commodity | 2006 | 2007 | 2008 |
| Hydrogen fluoride (hydrofluoric acid) | $12,812 | $11,722 | |
| Inorganic acids other than hydrogen fluoride | $32,888 | $44,639 | $147,334 |
| Carbon dioxide | $138,080 | $10,436 | $80,377 |
| Silicon dioxide | $1,200,464 | $521,288 | $1,200,633 |
| Inorganic oxygen comps. of non-metals other than inorganic acids/carbon dio ... | $153,160 | $73,303 | $270,200 |
| Total | $1,537,404 | $661,388 | $1,698,544 |
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