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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $57,292 | $86,126 | $18,377 | $25,382 | $319,567 | $104,320 | $51,354 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $36,770 | $47,966 | $1,375,277 | $94,146 | $61,325 | $77,145 | $106,506 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $7,724 | $13,598 | $7,705 | $9,038 | $4,849 | $20 | $8,838,159 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $77,582 | $100,842 | $127,181 | $101,428 | $129,349 | $197,744 | $350,551 |
| Total | $179,368 | $248,532 | $1,528,540 | $229,994 | $515,090 | $379,229 | $9,346,570 |
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