|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Hydrogen | $2,310 | | | | $320 | |
| Argon | $20,199 | $5,065 | | | $5,287 | |
| Rare gases other than argon | $2,191 | | $4,768 | $351 | | $433 |
| Nitrogen | $7,725 | $6,570 | $3,146 | $10,459 | $4,925 | $7,285 |
| Oxygen | | | $9,880 | | | $51,450 |
| Total | $32,425 | $11,635 | $17,794 | $10,810 | $10,532 | $59,168 |
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