Commodity2005200620072008200920102011
Hydrogen $273 $251 $518$3,644
Argon$104,677$146,201$177,910$186,578$165,864$235,644$225,196
Rare gases other than argon$17,341$16,373$35,862$30,649$28,458$30,087$30,980
Nitrogen$29,211$29,286$28,169$10,813$7,035$34,218$22,329
Oxygen$115,022$179,188$249,984$379,035$261,567$253,106$390,988
Silicon, cont. by wt. not <99.99% of silicon$19,561 $146,671   $599
Silicon, cont. by wt. <99.99% of silicon$32,337$18,304  $64,540$12,919$202
Phosphorus $93$42    
Total$318,149$389,718$638,638$607,326$527,464$566,492$673,938