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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $481,992 | $136,343 | $813,025 | $124,732 | $180,608 | $233,766 | $116,100 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $7,399,500 | $4,497,866 | $5,139,051 | $12,210,877 | $11,130,898 | $10,471,595 | $11,586,211 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $1,884,390 | $2,152,927 | $1,453,844 | $3,628,552 | $1,598,063 | $717,331 | $652,942 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $3,956,269 | $8,303,303 | $11,040,497 | $14,615,204 | $9,580,318 | $6,139,820 | $7,511,498 |
| Total | $13,722,151 | $15,090,439 | $18,446,417 | $30,579,365 | $22,489,887 | $17,562,512 | $19,866,751 |
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