Commodity20052007200820092010
Argon$7,951$495 $52,915$48,993
Rare gases other than argon   $39,060$51,171
Nitrogen$1,467  $163$10,219
Oxygen  $2,624$83,168$67,596
Silicon, cont. by wt. <99.99% of silicon    $562
Total$9,418$495$2,624$175,306$178,541