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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $4,684,554 | $2,814,293 | $2,150,255 | $3,206,605 | $3,471,059 | $4,127,575 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $4,408,674 | $3,172,976 | $4,710,161 | $6,589,216 | $4,244,193 | $3,809,891 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $55,296 | $173,089 | $95,842 | $39,929 | $37,052 | $5,876 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $5,109,741 | $6,169,564 | $15,858,758 | $10,371,716 | $4,247,399 | $5,440,307 |
| Total | $14,258,265 | $12,329,922 | $22,815,016 | $20,207,466 | $11,999,703 | $13,383,649 |
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