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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $214,897,373 | $175,927,389 | $293,587,940 | $922,644,435 | $352,284,558 | $358,383,325 |
| Articles of iron or steel | $339,863,590 | $597,673,604 | $1,046,731,219 | $1,067,356,833 | $883,366,268 | $644,948,449 |
| Copper and articles thereof | $112,234,213 | $238,656,252 | $451,996,677 | $658,954,757 | $228,494,592 | $357,266,754 |
| Nickel and articles thereof | $182,775 | $387,725 | $1,252,619 | $4,474,264 | $12,992,179 | $754,032 |
| Aluminum and articles thereof | $102,485,388 | $126,831,170 | $195,820,492 | $219,462,476 | $163,412,525 | $135,284,429 |
| Lead and articles thereof | $8,396,296 | $17,265,051 | $49,135,695 | $31,585,698 | $8,738,906 | $19,232,264 |
| Zinc and articles thereof | $7,448,240 | $12,635,953 | $13,027,311 | $7,979,528 | $5,198,315 | $7,043,508 |
| Tin and articles thereof | $388,104 | $681,708 | $1,044,083 | $887,329 | $655,858 | $1,104,560 |
| Other base metals; cermets; articles thereof | $1,374,540 | $1,275,183 | $1,019,755 | $2,635,016 | $220,997 | $810,850 |
| Tools, implements, cutlery, spoons and forks, of base metal | $12,228,376 | $18,592,579 | $22,436,475 | $32,267,761 | $22,727,838 | $24,337,410 |
| Miscellaneous articles of base metal | $29,825,622 | $35,254,036 | $58,919,954 | $67,639,030 | $51,172,392 | $65,092,224 |
| Total | $829,324,517 | $1,225,180,650 | $2,134,972,220 | $3,015,887,127 | $1,729,264,428 | $1,614,257,805 |
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