Commodity2005200620072008200920102011
Hydrogen$14,759$13,220$13,158$25,680$46,113$79,296$372,637
Argon$2,155,996$3,547,917$5,986,400$6,505,509$4,220,814$3,953,311$8,313,633
Rare gases other than argon$433$11,582$39,753$32,456$57,284$140,331$165,505
Nitrogen$622,137$755,021$1,164,339$2,032,401$1,427,084$1,184,505$2,862,312
Oxygen$2,580,184$2,760,815$5,035,770$5,312,828$3,165,469$2,238,880$4,150,544
Silicon, cont. by wt. not <99.99% of silicon$2,440 $14,457    
Silicon, cont. by wt. <99.99% of silicon   $32,443  $41,422
Phosphorus    $11  
Selenium$262,132$875,235$779,103$1,176,925$863,665$737,229$1,505,116
Total$5,638,081$7,963,790$13,032,980$15,118,242$9,780,440$8,333,552$17,411,169