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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $2,270,995 | $3,028,874 | $2,021,106 | $2,590,489 | $1,681,913 | $2,822,534 | $2,848,965 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $2,286,935 | $3,159,435 | $4,847,094 | $2,519,519 | $3,395,571 | $856,207 | $2,588,258 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $2,375,476 | $4,987,031 | $3,866,516 | $3,884,271 | $2,764,903 | $31,365,225 | $1,185,283 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $5,745,400 | $6,446,308 | $10,731,452 | $15,169,454 | $5,818,533 | $9,669,964 | $7,366,853 |
| Total | $12,678,806 | $17,621,648 | $21,466,168 | $24,163,733 | $13,660,920 | $44,713,930 | $13,989,359 |
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