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| Chapter | 2005 | 2006 | 2007 |
| Iron and steel | $303,781,185 | $385,166,586 | $450,319,988 |
| Articles of iron or steel | $122,189,173 | $129,543,851 | $129,629,967 |
| Copper and articles thereof | $39,411,943 | $38,127,347 | $56,017,361 |
| Nickel and articles thereof | $1,820,230 | $1,345,747 | $1,437,079 |
| Aluminum and articles thereof | $73,837,620 | $82,739,210 | $103,363,109 |
| Lead and articles thereof | $3,199,113 | $9,722,437 | $18,685,757 |
| Zinc and articles thereof | $48,762,646 | $86,688,093 | $101,798,601 |
| Tin and articles thereof | $2,290,680 | $482,119 | $493,245 |
| Other base metals; cermets; articles thereof | $1,255,475 | $335,958 | $319,168 |
| Tools, implements, cutlery, spoons and forks, of base metal | $21,026,284 | $14,216,564 | $16,214,125 |
| Miscellaneous articles of base metal | $16,313,187 | $17,292,923 | $22,448,385 |
| Total | $633,887,536 | $765,660,835 | $900,726,785 |
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