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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $376,499 | $615,243 | $255,545 | $420,927 | $825,917 | $450,334 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $2,822,328 | $1,174,673 | $1,332,524 | $1,821,246 | $2,502,032 | $1,642,659 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $9,821 | $626 | $665 | $15 | $6,539 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $263,600 | $486,185 | $288,059 | $1,043,284 | $814,169 | $773,898 |
| Total | $3,472,248 | $2,276,727 | $1,876,793 | $3,285,472 | $4,148,657 | $2,866,891 |
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