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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $23,451 | $899,570 | $2,567,242 | $1,717,282 | $1,177,966 | $42,316 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $20,456 | $11,834 | $125,606 | $83,346 | $7,013 | $48,038 |
| Total | $43,907 | $911,404 | $2,692,848 | $1,800,628 | $1,184,979 | $90,354 |
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