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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $52,230,704 | $59,881,991 | $73,673,093 | $62,336,418 | $23,043,990 | $29,789,882 | $32,059,170 |
| Articles of iron or steel | $226,702,796 | $229,580,002 | $264,799,474 | $202,824,592 | $87,160,523 | $76,488,649 | $87,746,153 |
| Copper and articles thereof | $9,973,084 | $15,484,806 | $11,828,245 | $8,448,320 | $4,595,374 | $4,644,095 | $5,722,684 |
| Nickel and articles thereof | $19,488 | $28,082 | $987,435 | $674,136 | $78,578 | $222,058 | $137,462 |
| Aluminum and articles thereof | $79,790,397 | $120,189,737 | $73,514,655 | $72,988,310 | $36,867,428 | $72,421,574 | $116,099,654 |
| Lead and articles thereof | $48,150 | $41,004 | $58,945 | $16,055 | $24,330 | $39,485 | $188,281 |
| Zinc and articles thereof | $474,704 | $1,383,048 | $1,175,231 | $810,546 | $658,254 | $1,303,771 | $2,595,419 |
| Tin and articles thereof | $274,738 | $72,817 | $171,398 | $106,319 | $47,979 | $50,375 | $62,527 |
| Other base metals; cermets; articles thereof | $1,411,692 | $1,201,791 | $2,102,732 | $7,076,709 | $2,945,806 | $11,140,386 | $16,751,357 |
| Tools, implements, cutlery, spoons and forks, of base metal | $22,598,208 | $23,982,468 | $32,871,670 | $22,443,493 | $12,558,803 | $13,039,097 | $15,374,888 |
| Miscellaneous articles of base metal | $21,141,709 | $26,845,696 | $29,525,232 | $26,904,316 | $15,240,781 | $15,381,220 | $17,611,361 |
| Total | $414,665,670 | $478,691,442 | $490,708,110 | $404,629,214 | $183,221,846 | $224,520,592 | $294,348,956 |
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