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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $23,463,000 | $170,062,000 | $263,510,000 | $54,903,000 | $65,052,000 | $48,315,406 | $76,082,527 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $2,842,000 | $5,634,000 | $6,327,000 | $5,337,000 | $5,146,000 | $9,745,497 | $3,098,363 |
| Total | $26,305,000 | $175,696,000 | $269,837,000 | $60,240,000 | $70,198,000 | $58,060,903 | $79,180,890 |
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