|
| Commodity | 2005 | 2007 | 2009 | 2010 | 2011 |
| Argon | | $444 | $10,935 | $9,530 | $4,296 |
| Rare gases other than argon | $4,025 | $4,025 | $2,266 | $1,472 | $1,215 |
| Nitrogen | $688 | $301 | $3,217 | $1,185 | $1,477 |
| Oxygen | $40,425 | $31,310 | $25,675 | $26,147 | $24,463 |
| Silicon, cont. by wt. <99.99% of silicon | $404 | | | | |
| Selenium | $3,384 | | | | |
| Total | $48,926 | $36,080 | $42,093 | $38,334 | $31,451 |
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