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| Chapter | 2005 | 2006 | 2007 | 2009 |
| Iron and steel | $16,410,759 | $13,959,298 | $23,707,934 | $19,543,319 |
| Articles of iron or steel | $9,041,023 | $10,117,826 | $8,924,857 | $9,622,549 |
| Copper and articles thereof | $44,840 | $1,708,001 | $2,247,125 | $631,076 |
| Nickel and articles thereof | $5,063 | | $3 | $5,255 |
| Aluminum and articles thereof | $19,076,788 | $18,093,439 | $25,721,305 | $12,268,739 |
| Lead and articles thereof | | $90,140 | $348,405 | |
| Zinc and articles thereof | $6,654 | $493 | $70,803 | $1,299 |
| Other base metals; cermets; articles thereof | | $450 | $22,490 | |
| Tools, implements, cutlery, spoons and forks, of base metal | $748,798 | $1,420,776 | $3,493,614 | $1,143,321 |
| Miscellaneous articles of base metal | $2,134,224 | $5,944,655 | $6,418,112 | $6,292,139 |
| Total | $47,468,149 | $51,335,078 | $70,954,648 | $49,507,697 |
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