Commodity2005200620072008200920102011
Hydrogen$366     $56
Rare gases other than argon$2,002$716$5,828$210,339$4,854$6,160$9,977
Nitrogen $12,382$40,619$4,672   
Oxygen$122,661$274,573$126,577$134,775$25,993$4,859$2,594
Silicon, cont. by wt. not <99.99% of silicon  $691  $200 
Silicon, cont. by wt. <99.99% of silicon$28,644 $539$859$4,814$481$347
Arsenic     $337 
Selenium  $5,397    
Total$153,673$287,671$179,651$350,645$35,661$12,037$12,974