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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $54,142 | $24,276 | $1,256,149 | $947,341 | $53,128 | $453,871 | $4,938,693 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $96,787 | $41,736 | $78,240 | $224,457 | $282,417 | $1,320,203 | $408,624 |
| Total | $150,929 | $66,012 | $1,334,389 | $1,171,798 | $335,545 | $1,774,074 | $5,347,317 |
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