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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $31,321 | $176,058 | $30,468 | $18,238 | $58,498 | $15,780 | $39,979 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $1,031,542 | $22,632 | $495,726 | $143,052 | $72,278 | $108,655 | $44,002 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $29,472 | | | $5,891 | | $2,080 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $56,487 | $28,814 | $37,800 | $161,788 | $10,376 | $23,727 | $41,215 |
| Total | $1,148,822 | $227,504 | $563,994 | $328,969 | $141,152 | $150,242 | $125,196 |
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