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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron and steel | $75,312,011 | $92,854,786 | $69,558,261 | $75,391,208 | $40,706,613 | $68,585,202 |
| Articles of iron or steel | $104,648,043 | $140,236,503 | $122,370,289 | $166,444,990 | $205,631,481 | $172,697,389 |
| Copper and articles thereof | $47,015,534 | $70,728,954 | $79,792,558 | $112,083,760 | $56,353,144 | $50,650,429 |
| Nickel and articles thereof | | | | | | $81,418 |
| Aluminum and articles thereof | $47,471,661 | $44,383,152 | $73,479,932 | $131,129,190 | $682,965,503 | $556,717,913 |
| Lead and articles thereof | | | $761,971 | $782,313 | $325,485 | $683,510 |
| Zinc and articles thereof | $347,717 | $53,482 | $524,094 | $456,073 | $49,235 | $329,936 |
| Tin and articles thereof | | | | | $317 | $4,440 |
| Other base metals; cermets; articles thereof | | | $23,524 | | | $38,299 |
| Tools, implements, cutlery, spoons and forks, of base metal | $146,165 | $971,932 | $5,334,152 | $2,457,056 | $1,764,316 | $1,002,352 |
| Miscellaneous articles of base metal | $1,482,215 | $1,160,682 | $2,419,530 | $2,693,698 | $1,861,361 | $1,445,659 |
| Total | $276,423,346 | $350,389,491 | $354,264,311 | $491,438,288 | $989,657,455 | $852,236,547 |
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