Commodity2005200620072008200920102011
Furnace burners for liquid fuel$13,948$25,782$106,260$58,362$20,740$16,051$34,254
Furnace burners other than those for liquid fuel, incl. combination burners ...$164,505$257,464$543,581$968,262$1,718,756$304,973$726,175
Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ...     $72 
Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ...$856$2,535$16,939$28,410$484,835$68,221$178,946
Total$179,309$285,781$666,780$1,055,034$2,224,331$389,317$939,375