Commodity20052006200720082009
Hydrogen   $84$84
Argon$121,134$166,553$283,590$245,027$139,249
Rare gases other than argon$90,440$119,212$131,455$151,705$227,186
Nitrogen$45,359$36,980$91,691$34,700$36,795
Oxygen$116,956$129,524$177,539$184,999$175,000
Boron; tellurium$676$1,625$200$2,858$2,579
Silicon, cont. by wt. not <99.99% of silicon$33 $291$268$2,187
Selenium  $16  
Total$374,598$453,894$684,782$619,641$583,080