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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Producer gas/water gas generators, with/without their purifiers; acetylene ... | $1,065,564 | $885,443 | $1,410,682 | $1,842,634 | $1,106,538 | $890,394 | $100,467 |
| Parts of the producer gas/water gas generators/acetylene gas & sim. water p ... | $467,511 | $259,641 | $608,700 | $142,445 | $103,617 | $249,815 | $147,359 |
| Total | $1,533,075 | $1,145,084 | $2,019,382 | $1,985,079 | $1,210,155 | $1,140,209 | $247,826 |
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