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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $3,632,894 | $4,446,969 | $6,077,322 | $3,920,247 | $6,256,029 | $5,307,714 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $11,895,275 | $11,835,055 | $11,231,069 | $16,801,677 | $10,206,163 | $11,921,505 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $4,576,820 | $8,304,933 | $8,817,552 | $12,663,193 | $8,081,073 | $4,487,900 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $11,821,073 | $13,310,379 | $15,637,015 | $13,640,989 | $8,924,585 | $12,588,010 |
| Total | $31,926,062 | $37,897,336 | $41,762,958 | $47,026,106 | $33,467,850 | $34,305,129 |
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