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| Chapter | 2005 | 2006 | 2010 |
| Iron and steel | $2,219,887,514 | $383,546,935 | $4,571,713,414 |
| Articles of iron or steel | $1,071,952,672 | $570,690,244 | $1,426,912,352 |
| Copper and articles thereof | $135,321,559 | $17,127,296 | $57,167,717 |
| Nickel and articles thereof | $24,350,019 | $3,497,664 | $25,707,882 |
| Aluminum and articles thereof | $358,441,318 | $69,075,780 | $545,367,697 |
| Lead and articles thereof | $9,554,417 | $2,341,915 | $3,566,132 |
| Zinc and articles thereof | $15,877,297 | $5,430,209 | $18,118,874 |
| Tin and articles thereof | $13,933,613 | $4,291,258 | $13,837,408 |
| Other base metals; cermets; articles thereof | $4,722,846 | $1,888,814 | $7,350,783 |
| Tools, implements, cutlery, spoons and forks, of base metal | $121,785,915 | $36,937,772 | $102,758,229 |
| Miscellaneous articles of base metal | $67,632,626 | $29,784,893 | $124,068,848 |
| Total | $4,043,459,796 | $1,124,612,780 | $6,896,569,336 |
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