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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $67,366 | $149,227 | $164,742 | $241,636 | $201,690 | $538,236 | $559,849 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $408,895 | $1,232,480 | $2,269,977 | $552,393 | $891,972 | $2,035,882 | $2,260,109 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $1,906,036 | $4,977,526 | $1,626,264 | $1,912,131 | $767,581 | $1,129,181 | $1,552,442 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $166,076 | $1,683,556 | $945,193 | $797,795 | $221,445 | $1,082,104 | $1,009,979 |
| Total | $2,548,373 | $8,042,789 | $5,006,176 | $3,503,955 | $2,082,688 | $4,785,403 | $5,382,379 |
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