|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Hydrogen | | $13,797 | | | |
| Argon | $16,925 | $2,667 | $3,529 | $15,744 | $14,170 |
| Rare gases other than argon | $55,854 | $27,997 | $48,132 | $66,732 | $9,234 |
| Nitrogen | $17,700 | $6,194 | $11,703 | $53,736 | $25,325 |
| Oxygen | $46,026 | $34,735 | $64,113 | $31,181 | $26,125 |
| Boron; tellurium | | | $48 | | |
| Silicon, cont. by wt. <99.99% of silicon | | $1,309 | | | |
| Total | $136,505 | $86,699 | $127,525 | $167,393 | $74,854 |
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