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| Chapter | 2005 | 2006 | 2007 |
| Iron and steel | $6,982,431 | $5,533,373 | $3,047,849 |
| Articles of iron or steel | $1,915,488 | $568,730 | $322,287 |
| Copper and articles thereof | $8,477,704 | $16,991,150 | $22,067,387 |
| Nickel and articles thereof | | $3,702 | |
| Aluminum and articles thereof | $107,560 | $259,646 | $40,975 |
| Lead and articles thereof | $213,286 | $649,504 | $510,908 |
| Zinc and articles thereof | $282,135 | | |
| Other base metals; cermets; articles thereof | $226,485 | | $120 |
| Tools, implements, cutlery, spoons and forks, of base metal | $8,961 | $44,664 | $76,448 |
| Miscellaneous articles of base metal | $6,437 | $15,602 | $10,718 |
| Total | $18,220,487 | $24,066,371 | $26,076,692 |
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