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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | $573,851 | $317,184 | $661,521 | $685,775 | $513,288 | $482,793 | $687,107 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $272,876 | $658,908 | $864,038 | $899,967 | $137,182 | $1,085,482 | $1,033,577 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $15,250 | $1,038 | $4,276 | $12,923 | $2,977 | $2,532 | $1,592 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $157,891 | $266,686 | $180,375 | $409,333 | $258,990 | $1,028,019 | $726,759 |
| Total | $1,019,868 | $1,243,816 | $1,710,210 | $2,007,998 | $912,437 | $2,598,826 | $2,449,035 |
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