|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $19,669 | $20,107 | $28,681 | $1,058 | | $18,894 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $18,139 | $4,977 | | | $1,119 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | | | $2,303 | | | $12,667 |
| Total | $37,808 | $25,084 | $30,984 | $1,058 | $1,119 | $31,561 |
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