|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Hydrogen | | | $1 | | | $2 | $1 |
| Argon | $25 | $8 | $1,417 | $6 | $13 | $6 | $4,306 |
| Rare gases other than argon | $2,439 | | $1,834 | $1,980 | $7,426 | $12,048 | $3,002 |
| Nitrogen | $6 | $1,673 | $1,006 | $1,578 | $2,414 | $2,614 | $3,415 |
| Oxygen | $7,276 | $1,138 | $963 | $11,026 | $28,594 | $30,829 | $34,974 |
| Total | $9,746 | $2,819 | $5,221 | $14,590 | $38,447 | $45,499 | $45,698 |
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