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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $934,393 | $505,667 | $4,788,408 | $1,324,979 | $1,712,256 | $818,855 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $659,235 | $94,151 | $352,257 | $630,809 | $3,140,550 | $291,899 |
| Total | $1,593,628 | $599,818 | $5,140,665 | $1,955,788 | $4,852,806 | $1,110,754 |
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