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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $460,768 | $279,461 | $380,581 | $281,423 | $301,194 | $269,643 | $913,884 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $1,242,474 | $773,176 | $1,192,651 | $13,068,788 | $860,670 | $2,118,076 | $1,420,029 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $31,318 | $35,676 | $557,898 | $104,293 | $218,323 | $66,265 | $119,917 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $352,200 | $383,662 | $492,451 | $751,989 | $482,413 | $595,670 | $500,246 |
| Total | $2,086,760 | $1,471,975 | $2,623,581 | $14,206,493 | $1,862,600 | $3,049,654 | $2,954,076 |
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