|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Rare gases other than argon | | | | $1,570 | | | |
| Nitrogen | | | $49,209 | | | | |
| Oxygen | $338 | $2,224 | $112,329 | | $3,762 | | |
| Silicon, cont. by wt. not <99.99% of silicon | | | | $80 | | $1,373 | |
| Silicon, cont. by wt. <99.99% of silicon | | | | | | $39,770 | $18 |
| Total | $338 | $2,224 | $161,538 | $1,650 | $3,762 | $41,143 | $18 |
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