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| Chapter | 2005 | 2006 | 2007 |
| Iron and steel | $20,954,146 | $22,183,829 | $48,831,563 |
| Articles of iron or steel | $9,787,966 | $4,183,902 | $11,448,568 |
| Copper and articles thereof | $11,241,355 | $28,312,724 | $36,587,912 |
| Nickel and articles thereof | $482 | $146,055 | |
| Aluminum and articles thereof | $284,471 | $13,311 | $26,611 |
| Lead and articles thereof | $74,115 | $358 | $2,090,947 |
| Zinc and articles thereof | $422,079 | $1,158,425 | $1,823,046 |
| Tin and articles thereof | $54,581 | $57,672 | $211,463 |
| Other base metals; cermets; articles thereof | $7,940 | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $7,656,056 | $520,779 | $4,598,606 |
| Miscellaneous articles of base metal | $236,618 | $261,735 | $234,507 |
| Total | $50,719,809 | $56,838,790 | $105,853,223 |
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