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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $1,667,351 | $1,962,557 | $5,206,923 | $2,934,398 | $2,398,894 | $1,661,535 | $8,791,853 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $398,406 | $1,849,146 | $40,099 | $523,728 | $68,427 | $768 | $19,366 |
| Total | $2,065,757 | $3,811,703 | $5,247,022 | $3,458,126 | $2,467,321 | $1,662,303 | $8,811,219 |
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