|
| Commodity | 2005 | 2007 | 2009 | 2010 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $2,409 | $28,882 | $12,577 | $1,739 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | | $2,633 | $2,261 | $24,902 |
| Total | $2,409 | $31,515 | $14,838 | $26,641 |
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