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| Chapter | 2005 | 2006 | 2010 |
| Iron and steel | $644,589,973 | $537,956,575 | $355,848,773 |
| Articles of iron or steel | $149,754,802 | $205,232,001 | $355,927,417 |
| Copper and articles thereof | $112,708,806 | $596,476,216 | $577,347,546 |
| Nickel and articles thereof | $37,500 | $707,283 | |
| Aluminum and articles thereof | $240,919,766 | $234,717,431 | $313,788,920 |
| Lead and articles thereof | $6,060,048 | $28,968,534 | $78,514,339 |
| Zinc and articles thereof | $65,751,694 | $183,664,590 | $128,819,731 |
| Tin and articles thereof | $245,781 | $754,095 | $1,202 |
| Other base metals; cermets; articles thereof | $453,725 | $569,824 | $17,490 |
| Tools, implements, cutlery, spoons and forks, of base metal | $2,913,358 | $3,346,566 | $5,508,095 |
| Miscellaneous articles of base metal | $14,356,620 | $17,261,511 | $11,540,037 |
| Total | $1,237,792,073 | $1,809,654,626 | $1,827,313,550 |
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