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| Chapter | 2005 | 2009 | 2010 | 2011 |
| Iron and steel | | $508,279 | $680,717 | $951,938 |
| Articles of iron or steel | $20,115,629 | $36,566,019 | $24,551,391 | $44,368,819 |
| Copper and articles thereof | $1,600,120 | $2,198,628 | $1,704,684 | $2,404,506 |
| Nickel and articles thereof | | $25,536 | $62,772 | $25,511 |
| Aluminum and articles thereof | $9,746,338 | $8,591,185 | $8,159,612 | $7,751,575 |
| Lead and articles thereof | $66,412 | $50,376 | $54,520 | $96,075 |
| Zinc and articles thereof | $436,430 | $22,082 | $13,497 | $318,288 |
| Tin and articles thereof | $22,488 | $8,999 | $12,709 | $21,646 |
| Other base metals; cermets; articles thereof | $108 | $18,785 | $45,839 | $67,501 |
| Tools, implements, cutlery, spoons and forks, of base metal | | $3,342,160 | $3,483,733 | $4,372,712 |
| Miscellaneous articles of base metal | $4,434,812 | $3,871,218 | $3,848,407 | $5,221,243 |
| Total | $36,422,337 | $55,203,267 | $42,617,881 | $65,599,814 |
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