Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
Hydrogen | $4,267 | $1,509 | $3,149 | $4,251 | $4,114 | | |
Argon | $8,930 | $19,964 | $15,313 | $17,060 | $20,525 | $16,331 | |
Rare gases other than argon | $6,808 | $4,388 | $12,659 | $8,976 | $18,444 | | |
Nitrogen | $30,168 | $27,515 | $31,711 | $53,309 | $69,080 | $222,124 | $315,033 |
Oxygen | $429,781 | $441,916 | $456,291 | $358,416 | $224,639 | $241,885 | $253,857 |
Boron; tellurium | | $3,076 | | | | | |
Silicon, cont. by wt. not <99.99% of silicon | $772 | | | | | | |
Selenium | $66,783 | | | | | | |
Total | $547,509 | $498,368 | $519,123 | $442,012 | $336,802 | $480,340 | $568,890 |
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