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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $92,848 | $56,045 | $37,188 | $22,638 | $19,116 | $48,498 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $176,183 | $266,660 | $343,264 | $132,682 | $760,921 | $71,576 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $5,169 | $1,575 | $7,186 | $15,675 | $3,044 | $9,278 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $282,323 | $111,006 | $384,689 | $320,181 | $2,469,762 | $349,249 |
| Total | $556,523 | $435,286 | $772,327 | $491,176 | $3,252,843 | $478,601 |
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