|
| Commodity | 2005 | 2006 | 2007 | 2008 |
| Hydrogen | $168 | | $444 | $261 |
| Argon | $5,224 | $5,994 | $2,019 | $53,636 |
| Rare gases other than argon | | | | $20,908 |
| Nitrogen | $11,597 | $18,478 | $21,419 | $15,356 |
| Oxygen | $47,966 | $38,642 | $33,246 | $23,768 |
| Boron; tellurium | $636 | $1,044 | $1,038 | $1,374 |
| Silicon, cont. by wt. not <99.99% of silicon | $1 | $3 | | |
| Silicon, cont. by wt. <99.99% of silicon | $4,862 | $12,120 | $11,734 | $12,510 |
| Phosphorus | $164 | $1,978 | | $14 |
| Selenium | $177 | | | |
| Total | $70,795 | $78,259 | $69,900 | $127,827 |
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