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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $1,074,199 | $1,000,455 | $5,572,131 | $2,109,440 | $898,856 | $1,896,637 | $529,999 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $429,249 | $417,261 | $1,447,634 | $1,109,346 | $653,649 | $646,272 | $491,548 |
| Total | $1,503,448 | $1,417,716 | $7,019,765 | $3,218,786 | $1,552,505 | $2,542,909 | $1,021,547 |
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