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| Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Iron and steel | $13,438,123 | $17,808,351 | $14,492,175 | $20,656,702 | $14,409,566 | $9,283,201 | $30,641,825 |
| Articles of iron or steel | $84,923,786 | $112,581,704 | $106,829,037 | $105,504,087 | $97,481,536 | $106,646,691 | $137,013,464 |
| Copper and articles thereof | $2,746,144 | $4,984,155 | $5,034,202 | $4,100,284 | $3,236,532 | $2,633,729 | $3,318,373 |
| Nickel and articles thereof | $31,924 | $9,796 | $30,201 | $77,348 | $7,177 | $12,631 | $7,516 |
| Aluminum and articles thereof | $34,112,434 | $40,416,679 | $35,850,176 | $30,922,988 | $33,817,351 | $26,328,961 | $29,808,900 |
| Lead and articles thereof | $74,083 | $616,844 | $94,425 | $49,620 | $31,318 | $24,313 | $33,707 |
| Zinc and articles thereof | $315,855 | $499,197 | $652,345 | $253,115 | $137,670 | $234,768 | $124,511 |
| Tin and articles thereof | $129,497 | $107,038 | $174,252 | $84,908 | $107,522 | $87,759 | $160,794 |
| Other base metals; cermets; articles thereof | $30,563 | $77,100 | $132,393 | $39,338 | $22,444 | $101,750 | $61,532 |
| Tools, implements, cutlery, spoons and forks, of base metal | $9,346,267 | $11,024,053 | $10,705,186 | $11,283,465 | $9,111,180 | $9,433,884 | $10,997,837 |
| Miscellaneous articles of base metal | $14,902,525 | $13,947,191 | $26,454,464 | $13,055,937 | $15,661,542 | $12,409,513 | $13,111,629 |
| Total | $160,051,201 | $202,072,108 | $200,448,856 | $186,027,792 | $174,023,838 | $167,197,200 | $225,280,088 |
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