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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $38,596 | $61,972 | $123,899 | $380,109 | $260,319 | $201,491 | $208,579 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $7,618 | $114,109 | $162,392 | $382,760 | $63,793 | $151,639 | $418,576 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $10,489,929 | $6,076,453 | $1,788 | $27,825 | $3,574 | $39,968 | $60,267 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $568,662 | $34,361 | $113,609 | $69,223 | $61,972 | $24,884 | $55,241 |
| Total | $11,104,805 | $6,286,895 | $401,688 | $859,917 | $389,658 | $417,982 | $742,663 |
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