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| Chapter | 2005 | 2006 | 2007 | 2008 |
| Iron and steel | $5,388,944 | $7,510,288 | $6,549,861 | $11,287,672 |
| Articles of iron or steel | $10,548,560 | $18,828,161 | $9,603,717 | $10,216,166 |
| Copper and articles thereof | $585,497 | $839,095 | $580,363 | $659,242 |
| Nickel and articles thereof | | | $21 | $537 |
| Aluminum and articles thereof | $1,667,004 | $4,155,589 | $2,737,114 | $3,174,805 |
| Lead and articles thereof | $719 | $5,475 | $2,140 | $5,490 |
| Zinc and articles thereof | $1,886 | $417 | $7,507 | $996 |
| Tin and articles thereof | $11,784 | $8,360 | $9,756 | $3,390 |
| Other base metals; cermets; articles thereof | $7,206 | $18,752 | $22,062 | $479 |
| Tools, implements, cutlery, spoons and forks, of base metal | $1,487,568 | $2,252,836 | $2,031,607 | $1,914,533 |
| Miscellaneous articles of base metal | $2,557,313 | $3,373,176 | $2,793,115 | $3,134,825 |
| Total | $22,256,481 | $36,992,149 | $24,337,263 | $30,398,135 |
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