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| Chapter | 2005 | 2006 | 2007 | 2008 | 2010 |
| Iron and steel | $19,204,593 | $19,042,999 | $26,808,640 | $46,040,038 | $53,721,469 |
| Articles of iron or steel | $57,636,894 | $69,100,732 | $58,164,593 | $118,659,273 | $167,184,307 |
| Copper and articles thereof | $227,843 | $280,125 | $355,887 | $2,203,054 | $1,128,815 |
| Nickel and articles thereof | $5,266 | $2,405 | $2,671 | $10,561 | |
| Aluminum and articles thereof | $3,138,198 | $5,498,542 | $8,369,976 | $10,021,148 | $14,142,731 |
| Lead and articles thereof | $19,102 | $15,000 | $29,089 | $226,284 | $77,922 |
| Zinc and articles thereof | $856 | $3,102 | $399,066 | $266,566 | $594,515 |
| Tin and articles thereof | $5,784 | $2,000 | $35,231 | $33,809 | $241 |
| Other base metals; cermets; articles thereof | $45,787 | $7,969 | $1,027 | | $124,612 |
| Tools, implements, cutlery, spoons and forks, of base metal | $3,375,638 | $4,006,732 | $4,199,274 | $13,440,795 | $24,371,180 |
| Miscellaneous articles of base metal | $3,264,212 | $3,693,488 | $5,956,807 | $15,260,785 | $22,451,659 |
| Total | $86,924,173 | $101,653,094 | $104,322,261 | $206,162,313 | $283,797,451 |
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