Commodity | 2005 | 2007 | 2008 | 2009 | 2010 |
Argon | $7,951 | $495 | | $52,915 | $48,993 |
Rare gases other than argon | | | | $39,060 | $51,171 |
Nitrogen | $1,467 | | | $163 | $10,219 |
Oxygen | | | $2,624 | $83,168 | $67,596 |
Silicon, cont. by wt. <99.99% of silicon | | | | | $562 |
Total | $9,418 | $495 | $2,624 | $175,306 | $178,541 |
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