Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
Hydrogen | | $8,097 | | | $8,471 |
Argon | | $17,987 | | $74,316 | $174,049 |
Rare gases other than argon | | $114,140 | $143,258 | | $205,321 |
Nitrogen | $91,526 | $172,509 | $144,000 | $158,747 | $809,131 |
Oxygen | | | | | $342 |
Silicon, cont. by wt. not <99.99% of silicon | | $3,005 | | | $6,757 |
Silicon, cont. by wt. <99.99% of silicon | | $16,446 | | | |
Arsenic | | $71,173 | | | |
Selenium | $56,952 | $22,519 | | | |
Total | $148,478 | $425,876 | $287,258 | $233,063 | $1,204,071 |
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