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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $5,457,718 | $5,378,513 | $12,151,643 | $13,480,754 | $22,508,397 | $8,095,120 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $6,468,841 | $346,254 | $793,215 | $3,794,210 | $523,372 | $5,556,830 |
| Total | $11,926,559 | $5,724,767 | $12,944,858 | $17,274,964 | $23,031,769 | $13,651,950 |
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