Commodity2005200620072008200920102011
Hydrogen$29,488$1,028$19,630$16,884$92,481$69,873$220,764
Argon$1,131,463$1,638,870$1,793,685$1,826,221$1,476,417$1,766,226$2,097,892
Rare gases other than argon$633,280$422,363$487,190$261,085$483,565$468,349$910,491
Nitrogen$1,702,349$1,725,489$2,158,281$2,961,031$2,151,014$1,627,499$1,575,397
Oxygen$2,309,190$1,984,745$3,128,778$2,886,887$2,684,061$2,490,745$3,268,437
Silicon, cont. by wt. not <99.99% of silicon  $89    
Silicon, cont. by wt. <99.99% of silicon $1,542$36$11,745$149,576$571,731$270,436
Phosphorus    $7,411$8$9,831
Arsenic $1,231     
Selenium$62,985$2,464 $1,928$60,800 $3,898
Total$5,868,755$5,777,732$7,587,689$7,965,781$7,105,325$6,994,431$8,357,146