Commodity2005200620072008200920102011
Hydrogen$2,137$3,722$2,801$2,766$974$1,539$3,080
Argon$32,150$24,238$30,897$32,303$28,099$36,836$49,270
Rare gases other than argon$75,005$106,299$98,161$67,030$76,017$55,987$88,977
Nitrogen$6,725$3,358$4,574$3,766$30,545$9,876$7,493
Oxygen$27,766$80,751$95,514$87,183$98,125$165,720$142,040
Silicon, cont. by wt. not <99.99% of silicon$22$1,645$1,957$1,665 $1,822 
Silicon, cont. by wt. <99.99% of silicon$66,478$3,157$9,403$7,691$88,945$60,626$502
Phosphorus $403$1,805 $418$381$247
Arsenic$22  $48$46  
Total$210,305$223,573$245,112$202,452$323,169$332,787$291,609