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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $539,135 | $1,360,134 | $798,024 | $3,065,871 | $5,589,071 | $8,917,424 | $2,673,901 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $553,178 | $263,490 | $297,967 | $6,743,811 | $8,654,650 | $6,311,692 | $9,943,540 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $8,259 | $25,974 | $674,291 | $659,117 | $2,119,870 | $436,577 | $713,782 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $466,226 | $1,135,054 | $2,058,503 | $933,777 | $493,601 | $3,248,888 | $790,797 |
| Total | $1,566,798 | $2,784,652 | $3,828,785 | $11,402,576 | $16,857,192 | $18,914,581 | $14,122,020 |
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