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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $583,034 | $1,968,557 | $1,513,401 | $2,170,579 | $476,369 | $566,876 | $1,085,641 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $6,351 | $45,936 | $51,712 | $89,096 | $71,264 | $13,771 | $62,176 |
| Total | $589,385 | $2,014,493 | $1,565,113 | $2,259,675 | $547,633 | $580,647 | $1,147,817 |
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