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| Chapter | 2006 | 2007 | 2008 | 2009 |
| Iron and steel | $85,952,197 | $74,423,172 | $41,076,189 | $97,451,227 |
| Articles of iron or steel | $47,190,123 | $119,759,642 | $172,268,818 | $81,449,674 |
| Copper and articles thereof | $25,289,815 | $17,312,134 | $16,650,465 | $19,529,477 |
| Nickel and articles thereof | $39,998 | $48,154 | | $11,511 |
| Aluminum and articles thereof | $48,680,189 | $41,387,099 | $62,225,602 | $27,337,538 |
| Lead and articles thereof | $2,186,605 | $2,114,700 | $1,004,912 | $861,298 |
| Zinc and articles thereof | $107,203 | $645,708 | $324,060 | $7,470,955 |
| Tin and articles thereof | $84,733 | $451,280 | | $7,435 |
| Other base metals; cermets; articles thereof | $27,569 | $71,609 | | $10,047 |
| Tools, implements, cutlery, spoons and forks, of base metal | $2,300,055 | $4,195,679 | $2,051,433 | $2,270,025 |
| Miscellaneous articles of base metal | $1,516,486 | $1,902,880 | $1,710,132 | $1,628,294 |
| Total | $213,374,973 | $262,312,057 | $297,311,611 | $238,027,481 |
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