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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $1,317,369 | $6,841,619 | $1,239,153 | $2,424,239 | $2,840,159 | $720,152 | $686,189 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $34,595 | $2,074 | $246,742 | $68,538 | $853,795 | $94,794 | $414,170 |
| Total | $1,351,964 | $6,843,693 | $1,485,895 | $2,492,777 | $3,693,954 | $814,946 | $1,100,359 |
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