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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $5,834,441 | $21,426,973 | $174,880,591 | $10,732,444 | $5,548,533 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $2,399,325 | $6,358,122 | $6,090,523 | $1,296,893 | $3,432,145 |
| Total | $8,233,766 | $27,785,095 | $180,971,114 | $12,029,337 | $8,980,678 |
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