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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Hydrogen | $21,265 | $54,492 | $41,661 | $237,446 |
| Argon | $39,996 | $56,273 | $150,478 | $186,098 |
| Rare gases other than argon | $153,345 | $284,008 | $183,918 | $190,361 |
| Nitrogen | $2,770 | $65,006 | $54,683 | $51,438 |
| Oxygen | $511,433 | $192,464 | $574,287 | $559,221 |
| Boron; tellurium | $5,594 | | | |
| Silicon, cont. by wt. not <99.99% of silicon | $4,104 | $12,477 | $60,009 | $13,774 |
| Silicon, cont. by wt. <99.99% of silicon | $204,614 | $50,138 | $45,826 | $47,031 |
| Phosphorus | | | $2,919 | $85 |
| Selenium | $86 | $254 | | $855 |
| Total | $943,207 | $715,112 | $1,113,781 | $1,286,309 |
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