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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $61,962 | $107,350 | $120,695 | $381,824 | $150,889 | $134,819 | $298,651 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $132,900 | $213,939 | $581,504 | $109,671 | $165,874 | $246,577 | $1,131,049 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $773 | $37,033 | $101,068 | $295,508 | $958,871 | $283,911 | $112,158 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $356,961 | $929,117 | $231,790 | $956,429 | $369,180 | $1,561,665 | $7,605,354 |
| Total | $552,596 | $1,287,439 | $1,035,057 | $1,743,432 | $1,644,814 | $2,226,972 | $9,147,212 |
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