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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Hydrogen | $1,010 | $309 | $1,046 | |
| Argon | $3,699 | $27,086 | $7,014 | $8,204 |
| Rare gases other than argon | $4,415 | $5,327 | $4,437 | $6,390 |
| Nitrogen | $3,260 | $7,584 | $6,040 | $4,093 |
| Oxygen | $70,131 | $264,388 | $56,608 | $78,432 |
| Silicon, cont. by wt. <99.99% of silicon | | | $151 | $42 |
| Total | $82,515 | $304,694 | $75,296 | $97,161 |
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