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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Furnace burners for liquid fuel | $81,772 | $9,726 | $272,889 | $19,627 | $3,208,424 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $331 | $147,012 | $102,687 | $24,784 | $1,492,908 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | | $570,695 | $207,181 | $61,427 | $2,379 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $1,157,621 | $418,026 | $48,395 | $1,225,350 | $1,192,795 |
| Total | $1,239,724 | $1,145,459 | $631,152 | $1,331,188 | $5,896,506 |
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