Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
Hydrogen | $281 | $9 | $52 | $389 | $518 | $419 | $2,797 |
Argon | | | | | $174,812 | $176,684 | $76,045 |
Rare gases other than argon | | | | | | $20,993 | $191,096 |
Nitrogen | $3,915 | $7,318 | $556 | $17,353 | $25,258 | $27,109 | $49,282 |
Oxygen | $1,598 | $1,133 | $2,820 | $4,309 | $78,748 | $81,848 | $69,542 |
Silicon, cont. by wt. not <99.99% of silicon | | | | | $1,447 | | $512 |
Silicon, cont. by wt. <99.99% of silicon | | | | | | | $2,675 |
Phosphorus | | | | | | $4,392 | |
Selenium | | | | $2 | | | |
Total | $5,794 | $8,460 | $3,428 | $22,053 | $280,783 | $311,445 | $391,949 |
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