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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $927,573 | $636,844 | $1,473,425 | $1,334,553 | $85,773 | $170,191 | $942,970 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $183,280 | $1,343,168 | $483,926 | $740,309 | $8,490,312 | $161,297 | $50,710 |
| Total | $1,110,853 | $1,980,012 | $1,957,351 | $2,074,862 | $8,576,085 | $331,488 | $993,680 |
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