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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $1,324,013 | $452,766 | $466,930 | $1,240,129 | $2,113,931 | $2,422,500 | $5,460,396 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $5,919,317 | $5,653,585 | $12,420,110 | $19,738,005 | $13,702,367 | $14,539,479 | $21,170,101 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $1,013,257 | $11,799 | $300,174 | $41,823 | $406,304 | $2,186,954 | $5,324,858 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $1,111,870 | $2,443,450 | $1,588,395 | $3,339,929 | $3,846,569 | $4,586,104 | $48,103,809 |
| Total | $9,368,457 | $8,561,600 | $14,775,609 | $24,359,886 | $20,069,171 | $23,735,037 | $80,059,164 |
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