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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $601,814 | $244,137 | $452,054 | $3,090,319 | $18,458,276 | $67,179,308 | $9,523,063 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $131,232 | $836,063 | $2,471,162 | $74,633 | $2,472,292 | $29,345 | $45,359 |
| Total | $733,046 | $1,080,200 | $2,923,216 | $3,164,952 | $20,930,568 | $67,208,653 | $9,568,422 |
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