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| Chapter | 2005 | 2006 | 2007 | 2009 |
| Iron and steel | $110,662,234 | $101,566,596 | $157,594,733 | $102,714,553 |
| Articles of iron or steel | $78,567,927 | $86,229,186 | $114,426,115 | $88,642,300 |
| Copper and articles thereof | $2,426,667 | $5,954,773 | $4,636,428 | $2,144,302 |
| Nickel and articles thereof | $12,530 | $15,279 | $34,460 | $17,441 |
| Aluminum and articles thereof | $35,822,412 | $50,084,244 | $54,804,094 | $41,981,516 |
| Lead and articles thereof | $163,288 | $269,461 | $210,632 | $212,029 |
| Zinc and articles thereof | $527,185 | $1,374,478 | $1,535,095 | $809,594 |
| Tin and articles thereof | $139,261 | $203,021 | $73,136 | $130,556 |
| Other base metals; cermets; articles thereof | $12,015 | $19,739 | $14,127 | $23,671 |
| Tools, implements, cutlery, spoons and forks, of base metal | $19,849,128 | $23,486,309 | $26,952,872 | $26,159,869 |
| Miscellaneous articles of base metal | $18,585,676 | $23,305,890 | $28,095,692 | $22,304,744 |
| Total | $266,768,323 | $292,508,976 | $388,377,384 | $285,140,575 |
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