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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $35,689 | $24,896 | $14,184 | $3,027,699 | $5,251,986 | $322,352 | $39,023 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $25,122 | $72,441 | $23,907 | $29,327 | $27,127 | $3,101,284 | $2,789,783 |
| Total | $60,811 | $97,337 | $38,091 | $3,057,026 | $5,279,113 | $3,423,636 | $2,828,806 |
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