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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Furnace burners for liquid fuel | $1,448,290 | $1,698,260 | $2,303,776 | $2,642,355 | $3,654,262 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $6,908,286 | $10,021,445 | $10,115,073 | $8,524,066 | $11,325,542 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $501,746 | $549,491 | $971,147 | $618,273 | $646,202 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $1,525,178 | $4,814,746 | $5,221,243 | $4,622,805 | $1,578,863 |
| Total | $10,383,500 | $17,083,942 | $18,611,239 | $16,407,499 | $17,204,869 |
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