Commodity2005200620072008
Argon$12,369 $1,704$13,458
Rare gases other than argon $1,117$5,128$5,730
Nitrogen$18   
Oxygen$11,398$92,323$32,130$16,204
Silicon, cont. by wt. <99.99% of silicon$10,168   
Total$33,953$93,440$38,962$35,392