Commodity | 2005 | 2006 | 2007 | 2009 |
Hydrogen | $5,649 | $5,364 | $2,076 | $4,801 |
Argon | $113,630 | $112,140 | $125,018 | $87,852 |
Rare gases other than argon | $55,459 | $134,884 | $176,741 | $95,117 |
Nitrogen | $21,017 | $99,077 | $18,265 | $150,462 |
Oxygen | $52,668 | $226,141 | $139,206 | $591,741 |
Boron; tellurium | $1,451 | | | |
Silicon, cont. by wt. not <99.99% of silicon | | | $801 | |
Silicon, cont. by wt. <99.99% of silicon | $104 | $3,968 | $753 | $68 |
Phosphorus | $22,208 | $20,543 | $16,536 | $2,635 |
Arsenic | | | $53 | |
Selenium | $2,113 | $283 | $53 | |
Total | $274,299 | $602,400 | $479,502 | $932,676 |
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