|
| Commodity | 2005 | 2006 | 2007 | 2008 |
| Hydrogen fluoride (hydrofluoric acid) | $9,595 | $7,592 | $6,061 | $9,479 |
| Inorganic acids other than hydrogen fluoride | $81,382 | $63,645 | $125,919 | $109,726 |
| Carbon dioxide | $148,174 | $100,368 | $171,713 | $203,785 |
| Silicon dioxide | $69,071 | $22,313 | $118,727 | $197,926 |
| Sulphur dioxide | $10,926 | $7,530 | | |
| Inorganic oxygen comps. of non-metals other than inorganic acids/carbon dio ... | $17,526 | $23,822 | $25,521 | $27,927 |
| Total | $336,674 | $225,270 | $447,941 | $548,843 |
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