|
| Commodity | 2006 | 2007 |
| Argon | $8,636 | $12,115 |
| Rare gases other than argon | $17,827 | $2,445 |
| Nitrogen | $1,394 | $1,622 |
| Oxygen | $6,879 | $6,138 |
| Silicon, cont. by wt. not <99.99% of silicon | $369 | $133 |
| Silicon, cont. by wt. <99.99% of silicon | $2,263 | $1,214 |
| Total | $37,368 | $23,667 |
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